tinymce editor not working

After open or create note, I don't see TinyMCE editor. I found many 404 errors in browser console and files looks like as tinymce plugins:

```
GET https://mydomain.tld/assets/themes/modern/theme.js
GET https://mydomain.tld/assets/plugins/autolink/plugin.js
GET https://mydomain.tld/assets/plugins/advlist/plugin.js
GET https://mydomain.tld/assets/plugins/lists/plugin.js
GET https://mydomain.tld/assets/plugins/link/plugin.js
GET https://mydomain.tld/assets/plugins/charmap/plugin.js
GET https://mydomain.tld/assets/plugins/print/plugin.js
GET https://mydomain.tld/assets/plugins/preview/plugin.js
GET https://mydomain.tld/assets/plugins/anchor/plugin.js
GET https://mydomain.tld/assets/plugins/searchreplace/plugin.js
GET https://mydomain.tld/assets/plugins/visualblocks/plugin.js
GET https://mydomain.tld/assets/plugins/code/plugin.js
GET https://mydomain.tld/assets/plugins/fullscreen/plugin.js
GET https://mydomain.tld/assets/plugins/insertdatetime/plugin.js
GET https://mydomain.tld/assets/plugins/media/plugin.js
GET https://mydomain.tld/assets/plugins/table/plugin.js
GET https://mydomain.tld/assets/plugins/contextmenu/plugin.js
GET https://mydomain.tld/assets/plugins/bdesk_photo/plugin.js
GET https://mydomain.tld/assets/plugins/autoresize/plugin.js
```

Is there conflict with some other plugin, settings or other?

Owncloud version 8.2.3.2 (stable)
Active apps:

> Activity, Default encryption module, Deleted files, First Run Wizard, Gallery, Mail Template Editor, Notifications, PDF Viewer, Provisioning API, Share Files, Text Editor, Updater, Video Viewer, Calendar, OwnNote

OwnCloud config:

```
$CONFIG = array (
'instanceid' => 'XXX',
'passwordsalt' => 'XXX',
'secret' => 'XXX',
'trusted_domains' =>
array (
0 => 'XXX',
),
'datadirectory' => '/data/cloud',
'overwrite.cli.url' => 'XXX',
'dbtype' => 'mysql',
'version' => '8.2.3.2',
'dbname' => 'owncloud',
'dbhost' => 'localhost',
'dbtableprefix' => 'oc_',
'dbuser' => 'owncloud',
'dbpassword' => 'XXX',
'logtimezone' => 'UTC',
'installed' => true,
'mail_from_address' => 'info',
'mail_smtpmode' => 'php',
'mail_domain' => 'XXX',
'asset-pipeline.enabled' => true,
'memcache.local' => '\OC\Memcache\Redis',
'memcache.locking' => '\OC\\Memcache\Redis',
'redis' => array (
'host' => 'localhost',
'port' => 6379,
),
'memcache.distributed' => '\OC\Memcache\Memcached',
'memcached_servers' => array(
array('localhost', 11211),
),
'theme' => '',
'loglevel' => 2,
'maintenance' => false,
);
```

Server:
Debian 8
Nginx 1.9.11
PHP 7.0.4 (fpm)
MariaDB 10.1.12
Redis 3.0.7