[Bug]: cron.php stops with exception: `InvalidArgumentException: fediverse`

⚠️ 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

Executing cron.php yields:

$ php cron.php
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
libpng warning: Interlace handling should be turned on when using png_read_image
InvalidArgumentException: fediverse in /www/htdocs/w014bcda/file.serrahneins.de/lib/private/Accounts/AccountManager.php:725
Stack trace:
#0 /www/htdocs/w014bcda/file.serrahneins.de/lib/private/Accounts/AccountManager.php(795): OC\Accounts\AccountManager->sanitizePropertyFediverse(Object(OC\Accounts\AccountProperty))
#1 /www/htdocs/w014bcda/file.serrahneins.de/apps/settings/lib/BackgroundJobs/VerifyUserData.php(237): OC\Accounts\AccountManager->updateAccount(Object(OC\Accounts\Account))
#2 /www/htdocs/w014bcda/file.serrahneins.de/apps/settings/lib/BackgroundJobs/VerifyUserData.php(54): OCA\Settings\BackgroundJobs\VerifyUserData->resetVerificationState()
#3 /www/htdocs/w014bcda/file.serrahneins.de/lib/public/BackgroundJob/Job.php(46): OCA\Settings\BackgroundJobs\VerifyUserData->start(Object(OC\BackgroundJob\JobList))
#4 /www/htdocs/w014bcda/file.serrahneins.de/cron.php(170): OCP\BackgroundJob\Job->execute(Object(OC\BackgroundJob\JobList))
#5 {main}

Steps to reproduce

1.login with bash
2.execute php cron.php

Expected behavior

should not stop with error

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.3

Web server

Apache (supported)

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Upgraded to a MAJOR version (ex. 31 to 32)

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": {
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "file.serrahneins.de",
            "www.file.serrahneins.de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "31.0.5.1",
        "overwrite.cli.url": "http:\/\/file.serrahneins.de",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "tempdirectory": "\/www\/htdocs\/w014bcda\/file.serrahneins.de\/data\/tmp",
        "mail_smtpmode": "sendmail",
        "mail_sendmailmode": "pipe",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "default_phone_region": "DE",
        "maintenance_window_start": 100,
        "maintenance": false,
        "updater.secret": "***REMOVED SENSITIVE VALUE***",
        "theme": "",
        "loglevel": 2,
        "forbidden_filename_basenames": [
            "con",
            "prn",
            "aux",
            "nul",
            "com0",
            "com1",
            "com2",
            "com3",
            "com4",
            "com5",
            "com6",
            "com7",
            "com8",
            "com9",
            "com\u00b9",
            "com\u00b2",
            "com\u00b3",
            "lpt0",
            "lpt1",
            "lpt2",
            "lpt3",
            "lpt4",
            "lpt5",
            "lpt6",
            "lpt7",
            "lpt8",
            "lpt9",
            "lpt\u00b9",
            "lpt\u00b2",
            "lpt\u00b3"
        ],
        "forbidden_filename_characters": [
            "<",
            ">",
            ":",
            "\"",
            "|",
            "?",
            "*",
            "\\",
            "\/"
        ],
        "forbidden_filename_extensions": [
            " ",
            ".",
            ".filepart",
            ".part"
        ]
    }
}

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

Start with lib/private/Accounts/AccountManager.php around line 725, then trace the update flow from apps/settings/lib/BackgroundJobs/VerifyUserData.php. Reproduce the failure by running php cron.php and determine why the fediverse account property reaches sanitization as invalid. Done means cron.php completes without this exception.