[Bug]: Declarative settings: TypeError when saving a checkbox field value
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bug
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Description
⚠️ This issue respects the following points: ⚠️
- This is a bug, not a question or a configuration/webserver/proxy issue.
- This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
- Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
- I agree to follow Nextcloud's Code of Conduct.
Bug description
When a declarative settings form contains a checkbox field with storage_type: internal, saving the value triggers a fatal TypeError:
OC\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given,
called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 343
Root cause: DeclarativeManager::saveInternalValue() unconditionally calls AppConfig::setValueString() regardless of the field type. A checkbox field sends 0 or 1 (integer) from the frontend, but setValueString() enforces a strict string type, which raises a TypeError.
Steps to reproduce
- Create a declarative settings form in an app with a
checkboxfield,storage_type: internal,section_type: admin:
[
'id' => 'checkbox_form',
'priority' => 1,
'section_type' => DeclarativeSettingsTypes::SECTION_TYPE_ADMIN,
'section_id' => Application::APP_ID,
'storage_type' => DeclarativeSettingsTypes::STORAGE_TYPE_INTERNAL,
'title' => 'Enable feature',
'fields' => [
[
'id' => 'my_checkbox',
'title' => 'My checkbox',
'type' => DeclarativeSettingsTypes::CHECKBOX,
'label' => 'Enable',
'default' => false,
],
],
]
- Open the admin settings page where the form is registered.
- Click the checkbox to toggle its value.
- Observe a
500 Internal Server ErroronPOST /ocs/v2.php/settings/api/declarative/value.
Expected behavior
The checkbox value (true/false or 1/0) should be saved without error. The DeclarativeManager should cast the value appropriately (e.g. call setValueBool() for CHECKBOX) or at minimum cast to (string) before calling setValueString().
Nextcloud Server version
33
Operating system
Debian/Ubuntu
PHP engine version
PHP 8.3
Web server
Apache (supported)
Database engine version
MySQL
Is this bug present after an update or on a fresh install?
None
Are you using the Nextcloud Server Encryption module?
Encryption is Disabled
What user-backends are you using?
- Default user-backend (database)
- LDAP/ Active Directory
- SSO - SAML
- Other
Configuration report
{
"system": {
"debug": true,
"profiler": true,
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/apps-extra",
"url": "\/apps-extra",
"writable": false
},
{
"path": "\/var\/www\/html\/apps-shared",
"url": "\/apps-shared",
"writable": false
},
{
"path": "\/var\/www\/html\/apps-writable",
"url": "\/apps-writable",
"writable": true
}
],
"allow_local_remote_servers": true,
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "1025",
"skeletondirectory": "\/skeleton",
"setup_create_db_user": false,
"loglevel": 0,
"log_query": true,
"query_log_file": "\/shared\/log\/querylog-stable33.log",
"query_log_file_requestid": "yes",
"diagnostics.logging": false,
"diagnostics.logging.threshold": 0,
"log.condition": {
"apps": [
"diagnostics",
"admin_audit"
]
},
"sharing.federation.allowSelfSignedCertificates": true,
"gss.selfsigned.allow": true,
"default_language": "fr",
"default_locale": "fr_FR",
"reduce_to_languages": [
"fr",
"en"
],
"default_phone_region": "FR",
"default_timezone": "Europe\/Paris",
"knowledgebaseenabled": true,
"knowledgebase.embedded": false,
"allow_user_to_change_display_name": true,
"has_internet_connection": true,
"loglevel_frontend": 0,
"logtimezone": "Europe\/Paris",
"defaultapp": "dashboard,files",
"appstoreenabled": false,
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"localhost",
"nextcloud",
"stable33.local",
"192.168.21.7",
"localhost"
],
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "33.0.5.0",
"overwrite.cli.url": "https:\/\/stable33.local",
"instanceid": "***REMOVED SENSITIVE VALUE***",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"updater.release.channel": "git",
"installed": true,
"lookup_server": "",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"memcache.local": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"app_install_overwrite": [
"demo"
]
}
}
List of activated Apps
Enabled:
- cloud_federation_api: 1.17.0
- comments: 1.23.0
- contactsinteraction: 1.14.1
- dashboard: 7.13.0
- dav: 1.36.0
- demo: 1.0.0
- federatedfilesharing: 1.23.0
- federation: 1.23.0
- files: 2.5.0
- files_reminders: 1.6.0
- files_sharing: 1.25.2
- files_trashbin: 1.23.0
- files_versions: 1.26.0
- lookup_server_connector: 1.21.0
- oauth2: 1.21.0
- profile: 1.2.0
- provisioning_api: 1.23.0
- settings: 1.16.0
- sharebymail: 1.23.0
- systemtags: 1.23.0
- theming: 2.8.0
- twofactor_backupcodes: 1.22.0
- updatenotification: 1.23.0
- user_status: 1.13.0
- weather_status: 1.13.0
- webhook_listeners: 1.5.0
- workflowengine: 2.15.0
Disabled:
- admin_audit: 1.23.0
- encryption: 2.21.0
- files_external: 1.25.1
- testing: 1.23.0
- user_ldap: 1.24.0
Nextcloud Signing status
Integrity checker has been disabled. Integrity cannot be verified.
Nextcloud Logs
2026-06-01 16:55:39.549 | 192.168.21.5 - - [01/Jun/2026:14:55:39 +0000] "POST /ocs/v2.php/settings/api/declarative/value HTTP/1.1" 500 1053 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0"
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type` FROM `*PREFIX*appconfig` WHERE `lazy` = :dcValue1' with parameters: dcValue1 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"serverDI","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"The requested alias \"OCP\\IServerContainer\" is deprecated. Please request \"Psr\\Container\\ContainerInterface\" directly. This alias will be removed in a future Nextcloud version.","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"serverDI"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"--","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/lib/base.php","line":760,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["session"]]},{"file":"/var/www/html/lib/base.php","line":1288,"function":"init","class":"OC","type":"::","args":[]},{"file":"/var/www/html/ocs/v1.php","line":12,"args":["/var/www/html/lib/base.php"],"function":"require_once"},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/lib/base.php(760): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/lib/base.php(1288): OC::init()\\n#3 /var/www/html/ocs/v1.php(12): require_once('/var/www/html/l...')\\n#4 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#5 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `uid`, `displayname`, `password` FROM `*PREFIX*users` WHERE `uid_lower` = :dcValue1' with parameters: dcValue1 => 'admin'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"serverDI","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"The requested alias \"OCP\\IServerContainer\" is deprecated. Please request \"Psr\\Container\\ContainerInterface\" directly. This alias will be removed in a future Nextcloud version.","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"serverDI"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT * FROM `*PREFIX*authtoken` WHERE (`token` = :dcValue1) AND (`version` = :dcValue2)' with parameters: dcValue1 => 'c2e571506e0551e60475d52a9f26b43a0219082da1da3733533700cb555d8c1e21b658831391cecfa4216ff2f9e5c6e90f24379ebacc01017ee97ccbec3c5a5b', dcValue2 => '2'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/lib/private/legacy/OC_App.php","line":80,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["prelogin"]]},{"file":"/var/www/html/lib/private/legacy/OC_User.php","line":100,"function":"loadApps","class":"OC_App","type":"::","args":[["prelogin"]]},{"file":"/var/www/html/lib/base.php","line":831,"function":"setupBackends","class":"OC_User","type":"::","args":[]},{"file":"/var/www/html/lib/base.php","line":1288,"function":"init","class":"OC","type":"::","args":[]},{"file":"/var/www/html/ocs/v1.php","line":12,"args":["/var/www/html/lib/base.php"],"function":"require_once"},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/lib/private/legacy/OC_App.php(80): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/lib/private/legacy/OC_User.php(100): OC_App::loadApps(Array)\\n#3 /var/www/html/lib/base.php(831): OC_User::setupBackends()\\n#4 /var/www/html/lib/base.php(1288): OC::init()\\n#5 /var/www/html/ocs/v1.php(12): require_once('/var/www/html/l...')\\n#6 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#7 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"serverDI","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"The requested alias \"OCP\\IServerContainer\" is deprecated. Please request \"Psr\\Container\\ContainerInterface\" directly. This alias will be removed in a future Nextcloud version.","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"serverDI"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/ocs/v1.php","line":45,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["session"]]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/ocs/v1.php(45): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#3 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/ocs/v1.php","line":46,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["authentication"]]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/ocs/v1.php(46): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#3 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/ocs/v1.php","line":47,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["extended_authentication"]]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/ocs/v1.php(47): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#3 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/ocs/v1.php","line":52,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/ocs/v1.php(52): OC\\App\\AppManager->loadApps()\\n#2 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#3 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"serverDI","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"The requested alias \"OCP\\IServerContainer\" is deprecated. Please request \"Psr\\Container\\ContainerInterface\" directly. This alias will be removed in a future Nextcloud version.","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"serverDI"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":257,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/apps/dav/lib/AppInfo/Application.php","line":240,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[["dav"]]},{"file":"/var/www/html/lib/private/AppFramework/Bootstrap/Coordinator.php","line":170,"function":"boot","class":"OCA\\DAV\\AppInfo\\Application","type":"->","args":[{"__class__":"OC\\AppFramework\\Bootstrap\\BootContext"}]},{"file":"/var/www/html/lib/private/App/AppManager.php","line":481,"function":"bootApp","class":"OC\\AppFramework\\Bootstrap\\Coordinator","type":"->","args":["dav"]},{"file":"/var/www/html/lib/private/App/AppManager.php","line":273,"function":"loadApp","class":"OC\\App\\AppManager","type":"->","args":["dav"]},{"file":"/var/www/html/ocs/v1.php","line":52,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(257): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/apps/dav/lib/AppInfo/Application.php(240): OC\\App\\AppManager->loadApps(Array)\\n#2 /var/www/html/lib/private/AppFramework/Bootstrap/Coordinator.php(170): OCA\\DAV\\AppInfo\\Application->boot(Object(OC\\AppFramework\\Bootstrap\\BootContext))\\n#3 /var/www/html/lib/private/App/AppManager.php(481): OC\\AppFramework\\Bootstrap\\Coordinator->bootApp('dav')\\n#4 /var/www/html/lib/private/App/AppManager.php(273): OC\\App\\AppManager->loadApp('dav')\\n#5 /var/www/html/ocs/v1.php(52): OC\\App\\AppManager->loadApps()\\n#6 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#7 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `gu`.`gid`, `g`.`displayname` FROM `*PREFIX*group_user` `gu` LEFT JOIN `*PREFIX*groups` `g` ON `gu`.`gid` = `g`.`gid` WHERE `uid` = :dcValue1' with parameters: dcValue1 => 'admin'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":1,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"viewer","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"Error during app loading: Could not find path for viewer","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"OCP\\App\\AppPathNotFoundException","Message":"Could not find path for viewer","Code":0,"Trace":[{"file":"/var/www/html/lib/private/App/AppManager.php","line":460,"function":"getAppPath","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/lib/private/App/AppManager.php","line":273,"function":"loadApp","class":"OC\\App\\AppManager","type":"->","args":["viewer"]},{"file":"/var/www/html/ocs/v1.php","line":52,"function":"loadApps","class":"OC\\App\\AppManager","type":"->","args":[]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/App/AppManager.php","Line":717,"message":"Error during app loading: Could not find path for viewer","exception":"{\"class\":\"OCP\\App\\AppPathNotFoundException\",\"message\":\"Could not find path for viewer\",\"code\":0,\"file\":\"/var/www/html/lib/private/App/AppManager.php:717\",\"trace\":\"#0 /var/www/html/lib/private/App/AppManager.php(460): OC\\App\\AppManager->getAppPath('viewer')\\n#1 /var/www/html/lib/private/App/AppManager.php(273): OC\\App\\AppManager->loadApp('viewer')\\n#2 /var/www/html/ocs/v1.php(52): OC\\App\\AppManager->loadApps()\\n#3 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#4 {main}\"}","CustomMessage":"Error during app loading: Could not find path for viewer"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `appid`, `configkey`, `configvalue`, `type`, `flags` FROM `*PREFIX*preferences` WHERE (`userid` = :dcValue1) AND (`lazy` = :dcValue2)' with parameters: dcValue1 => 'admin', dcValue2 => '0'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":0,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"core","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"DB QueryBuilder: 'SELECT `provider_id`, `enabled` FROM `*PREFIX*twofactor_providers` WHERE `uid` = :dcValue1' with parameters: dcValue1 => 'admin'","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","data":{"app":"core"}}
2026-06-01 16:55:39.691 | {"reqId":"tFVVLsakkDjEoTBcYwNf","level":3,"time":"2026-06-01T16:55:39+02:00","remoteAddr":"192.168.21.5","user":"admin","app":"no app in context","method":"POST","url":"/ocs/v2.php/settings/api/declarative/value","scriptName":"/ocs/v2.php","message":"OC\\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given, called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 343 in file '/var/www/html/lib/private/AppConfig.php' line 637","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:151.0) Gecko/20100101 Firefox/151.0","version":"33.0.5.0","exception":{"Exception":"Exception","Message":"OC\\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given, called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 343 in file '/var/www/html/lib/private/AppConfig.php' line 637","Code":0,"Trace":[{"file":"/var/www/html/lib/private/AppFramework/App.php","line":153,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Settings\\Controller\\DeclarativeSettingsController"},"setValue"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":321,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Settings\\Controller\\DeclarativeSettingsController","setValue",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"ocs.settings.declarativesettings.setvalue"}]},{"file":"/var/www/html/ocs/v1.php","line":61,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/settings/api/declarative/value"]},{"file":"/var/www/html/ocs/v2.php","line":8,"args":["/var/www/html/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","Line":150,"Previous":{"Exception":"TypeError","Message":"OC\\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given, called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 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OC\\Route\\Router->match('/ocsapp/setting...')\\n#3 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#4 {main}\",\"previous\":{\"class\":\"TypeError\",\"message\":\"OC\\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given, called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 343\",\"code\":0,\"file\":\"/var/www/html/lib/private/AppConfig.php:637\",\"trace\":\"#0 /var/www/html/lib/private/Settings/DeclarativeManager.php(343): OC\\AppConfig->setValueString('demo', 'checkbox', 1)\\n#1 /var/www/html/lib/private/Settings/DeclarativeManager.php(271): OC\\Settings\\DeclarativeManager->saveInternalValue(Object(OC\\User\\User), 'demo', 'checkbox_form', 'checkbox', 1)\\n#2 /var/www/html/apps/settings/lib/Controller/DeclarativeSettingsController.php(103): OC\\Settings\\DeclarativeManager->setValue(Object(OC\\User\\User), 'demo', 'checkbox_form', 'checkbox', 1)\\n#3 /var/www/html/apps/settings/lib/Controller/DeclarativeSettingsController.php(57): OCA\\Settings\\Controller\\DeclarativeSettingsController->saveValue('demo', 'checkbox_form', 'checkbox', 1)\\n#4 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(205): OCA\\Settings\\Controller\\DeclarativeSettingsController->setValue('demo', 'checkbox_form', 'checkbox', 1)\\n#5 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(118): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Settings\\Controller\\DeclarativeSettingsController), 'setValue')\\n#6 /var/www/html/lib/private/AppFramework/App.php(153): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Settings\\Controller\\DeclarativeSettingsController), 'setValue')\\n#7 /var/www/html/lib/private/Route/Router.php(321): OC\\AppFramework\\App::main('OCA\\\\Settings\\\\Co...', 'setValue', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\\n#8 /var/www/html/ocs/v1.php(61): OC\\Route\\Router->match('/ocsapp/setting...')\\n#9 /var/www/html/ocs/v2.php(8): require_once('/var/www/html/o...')\\n#10 {main}\"}}","CustomMessage":"OC\\AppConfig::setValueString(): Argument #3 ($value) must be of type string, int given, called in /var/www/html/lib/private/Settings/DeclarativeManager.php on line 343 in file '/var/www/html/lib/private/AppConfig.php' line 637"}}
Additional info
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in lib/private/Settings/DeclarativeManager.php around line 343 and trace the POST /ocs/v2.php/settings/api/declarative/value path for internal checkbox values. Confirm that saving both checkbox states completes without a TypeError and that the value is persisted appropriately; add or update regression coverage if the relevant test location is identified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- php
- Domain
- api, backend
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Quiet
- Clarity
- Clearly specified
- Newbie friendliness
- 68/100