After an update my owncloud service is unavailable

Hello, After an update, my owncloud service is unavailable.
See below the errors. Any idea of what I should do?
Regards

/var/lib/univention-appcenter/apps/owncloud/data/files/owncloud.log
{“reqId”:“dQOnVWuQDfnUekulUwIV”,“level”:3,“time”:“2020-05-20T14:22:03+00:00”,“remoteAddr”:"",“user”:"–",“app”:“files”,“method”:"–",“url”:"–",“message”:“Exception: {“Exception”:“OCA\\User_LDAP\\Exceptions\\BindFailedException”,“Message”:”",“Code”:0,“Trace”:"#0 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Connection.php(170): OCA\\User_LDAP\\Connection->establishConnection()\n#1 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Access.php(178): OCA\\User_LDAP\\Connection->getConnectionResource()\n#2 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Group_LDAP.php(319): OCA\\User_LDAP\\Access->readAttribute(‘cn=012950,ou=us…’, ‘primaryGroupID’)\n#3 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Group_LDAP.php(343): OCA\\User_LDAP\\Group_LDAP->getEntryGroupID(‘cn=012950,ou=us…’, ‘primaryGroupID’)\n#4 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Group_LDAP.php(426): OCA\\User_LDAP\\Group_LDAP->getUserPrimaryGroupIDs(‘cn=012950,ou=us…’)\n#5 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Group_LDAP.php(463): OCA\\User_LDAP\\Group_LDAP->getUserPrimaryGroup(‘cn=012950,ou=us…’)\n#6 \/var\/www\/owncloud\/apps\/user_ldap\/lib\/Group_Proxy.php(122): OCA\\User_LDAP\\Group_LDAP->getUserGroups(‘DE024513-8FD1-4…’)\n#7 \/var\/www\/owncloud\/lib\/private\/Group\/Manager.php(321): OCA\\User_LDAP\\Group_Proxy->getUserGroups(‘DE024513-8FD1-4…’)\n#8 \/var\/www\/owncloud\/lib\/private\/Group\/Manager.php(275): OC\\Group\\Manager->getUserIdGroups(‘DE024513-8FD1-4…’, ‘sharing’)\n#9 \/var\/www\/owncloud\/lib\/private\/Share20\/DefaultShareProvider.php(842): OC\\Group\\Manager->getUserGroups(Object(OC\\User\\User), ‘sharing’)\n#10 \/var\/www\/owncloud\/lib\/private\/Share20\/Manager.php(1303): OC\\Share20\\DefaultShareProvider->getAllSharedWith(‘DE024513-8FD1-4…’, NULL)\n#11 \/var\/www\/owncloud\/apps\/files_sharing\/lib\/MountProvider.php(72): OC\\Share20\\Manager->getAllSharedWith(‘DE024513-8FD1-4…’, Array, NULL)\n#12 \/var\/www\/owncloud\/lib\/private\/Files\/Config\/MountProviderCollection.php(80): OCA\\Files_Sharing\\MountProvider->getMountsForUser(Object(OC\\User\\User), Object(OC\\Files\\Storage\\StorageFactory))\n#13 [internal function]: OC\\Files\\Config\\MountProviderCollection->OC\\Files\\Config\\{closure}(Object(OCA\\Files_Sharing\\MountProvider))\n#14 \/var\/www\/owncloud\/lib\/private\/Files\/Config\/MountProviderCollection.php(81): array_map(Object(Closure), Array)\n#15 \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php(446): OC\\Files\\Config\\MountProviderCollection->getMountsForUser(Object(OC\\User\\User))\n#16 \/var\/www\/owncloud\/lib\/private\/Files\/Filesystem.php(374): OC\\Files\\Filesystem::initMountPoints(‘DE024513-8FD1-4…’)\n#17 \/var\/www\/owncloud\/lib\/private\/legacy\/util.php(298): OC\\Files\\Filesystem::init(‘DE024513-8FD1-4…’, ‘\/DE024513-8FD1-…’)\n#18 \/var\/www\/owncloud\/lib\/private\/Files\/Utils\/Scanner.php(101): OC_Util::setupFS(‘DE024513-8FD1-4…’)\n#19 \/var\/www\/owncloud\/lib\/private\/Files\/Utils\/Scanner.php(137): OC\\Files\\Utils\\Scanner->getMounts(’’)\n#20 \/var\/www\/owncloud\/apps\/files\/lib\/BackgroundJob\/ScanFiles.php(85): OC\\Files\\Utils\\Scanner->backgroundScan(’’)\n#21 \/var\/www\/owncloud\/apps\/files\/lib\/BackgroundJob\/ScanFiles.php(109): OCA\\Files\\BackgroundJob\\ScanFiles->runScanner(Object(OC\\User\\User))\n#22 \/var\/www\/owncloud\/lib\/private\/BackgroundJob\/Job.php(66): OCA\\Files\\BackgroundJob\\ScanFiles->run(NULL)\n#23 \/var\/www\/owncloud\/lib\/private\/BackgroundJob\/TimedJob.php(63): OC\\BackgroundJob\\Job->execute(Object(OC\\BackgroundJob\\JobList), Object(OC\\Log))\n#24 \/var\/www\/owncloud\/core\/Command\/System\/Cron.php(125): OC\\BackgroundJob\\TimedJob->execute(Object(OC\\BackgroundJob\\JobList), Object(OC\\Log))\n#25 \/var\/www\/owncloud\/lib\/composer\/symfony\/console\/Command\/Command.php(255): OC\\Core\\Command\\System\\Cron->execute(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))\n#26 \/var\/www\/owncloud\/lib\/composer\/symfony\/console\/Application.php(982): Symfony\\Component\\Console\\Command\\Command->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))\n#27 \/var\/www\/owncloud\/lib\/composer\/symfony\/console\/Application.php(255): Symfony\\Component\\Console\\Application->doRunCommand(Object(OC\\Core\\Command\\System\\Cron), Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))\n#28 \/var\/www\/owncloud\/lib\/composer\/symfony\/console\/Application.php(148): Symfony\\Component\\Console\\Application->doRun(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))\n#29 \/var\/www\/owncloud\/lib\/private\/Console\/Application.php(165): Symfony\\Component\\Console\\Application->run(Object(Symfony\\Component\\Console\\Input\\ArgvInput), Object(Symfony\\Component\\Console\\Output\\ConsoleOutput))\n#30 \/var\/www\/owncloud\/console.php(106): OC\\Console\\Application->run()\n#31 \/var\/www\/owncloud\/occ(11): require_once(’\/var\/www\/ownclo…’)\n#32 {main}",“File”:"\/var\/www\/owncloud\/apps\/user_ldap\/lib\/Connection.php",“Line”:532}"}
{“reqId”:“dQOnVWuQDfnUekulUwIV”,“level”:3,“time”:“2020-05-20T14:22:03+00:00”,“remoteAddr”:"",“user”:"–",“app”:“PHP”,“method”:"–",“url”:"–",“message”:“ldap_control_paged_result_response(): Result is: Insufficient access (50) at /var/www/owncloud/apps/user_ldap/lib/LDAP.php#74”}

/var/log/apache2/error.log
[Wed May 20 15:16:58.457783 2020] [proxy:error] [pid 7281] (111)Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:40002 (127.0.0.1) failed
[Wed May 20 15:16:58.461237 2020] [proxy_http:error] [pid 7281] [client 86.239.196.38:54908] AH01114: HTTP: failed to make connection to backend: 127.0.0.1
[Wed May 20 15:17:03.734247 2020] [proxy:error] [pid 2491] (111)Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:40002 (127.0.0.1) failed
[Wed May 20 15:17:03.734289 2020] [proxy_http:error] [pid 2491] [client 78.253.111.6:59041] AH01114: HTTP: failed to make connection to backend: 127.0.0.1
[Wed May 20 15:17:46.070378 2020] [mpm_prefork:notice] [pid 2275] AH00169: caught SIGTERM, shutting down
[Wed May 20 15:17:46.298344 2020] [suexec:notice] [pid 23644] AH01232: suEXEC mechanism enabled (wrapper: /usr/lib/apache2/suexec)
[Wed May 20 15:17:48.004221 2020] [mpm_prefork:notice] [pid 23645] AH00163: Apache/2.4.25 (Univention) OpenSSL/1.0.2u mod_wsgi/4.5.11 Python/2.7 configured – resuming normal operations
[Wed May 20 15:17:48.004278 2020] [core:notice] [pid 23645] AH00094: Command line: ‘/usr/sbin/apache2’
[Wed May 20 15:18:15.267140 2020] [proxy:error] [pid 23652] (111)Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:40002 (127.0.0.1) failed
[Wed May 20 15:18:15.267175 2020] [proxy_http:error] [pid 23652] [client 10.64.100.244:54094] AH01114: HTTP: failed to make connection to backend: 127.0.0.1

netstat -anp | grep 4000
tcp6 0 0 :::40001 :::* LISTEN 16916/docker-proxy

Ok I spent my sunday reparing it. Here is my solution.
root@srv0196:/var/lib/univention-appcenter/apps/owncloud# ucr dump | grep -i 4000
appcenter/apps/owncloud/ports/8080: 40002
ldap/sizelimit: 400000
mail/messagesizelimit: 10240000
pamaccess/maxent: 0x400001
root@srv0196:/var/lib/univention-appcenter/apps/owncloud# ucr set appcenter/apps/owncloud/ports/8080=40001
Setting appcenter/apps/owncloud/ports/8080
Multifile: /etc/apache2/sites-available/000-default.conf
Multifile: /etc/apache2/sites-available/default-ssl.conf
root@srv0196:/var/lib/univention-appcenter/apps/owncloud# service apache2 restart
root@srv0196:/var/lib/univention-appcenter/apps/owncloud# ucr dump | grep -i 4000
appcenter/apps/owncloud/ports/8080: 40001
ldap/sizelimit: 400000
mail/messagesizelimit: 10240000
pamaccess/maxent: 0x400001
root@srv0196:/var/lib/univention-appcenter/apps/owncloud#