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Nextcloud version (eg, 18.0.2): docker nextcloud 18-APACHE:latest container
Operating system and version (eg, Ubuntu 20.04): Windows Server 2019
Apache or nginx version (eg, Apache 2.4.25): ???
PHP version (eg, 7.1): ???
The issue you are facing:
After deactivating some apps (not sure which ones anymore unfortunately) hoping to speed up my nextcloud instance, NC only shows a blank page. The logs show the following entries:
{"reqId":"ugTQSI6wl5y5kH18dI2m","level":3,"time":"2020-06-22T08:01:43+00:00","remoteAddr":"100.20.102.10","user":"XXXXXXXXXXXXXX","app":"PHP","method":"PUT","url":"/remote.php/webdav/SofortUpload/XXXXXXXXXXXXXXX.jpg","message":"array_merge(): Expected parameter 2 to be an array, null given at /var/www/html/lib/private/Files/Type/Detection.php#132","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.12.0","version":"18.0.6.0"}
{"reqId":"wp6eKTlIKubbzIos3G2f","level":3,"time":"2020-06-22T08:02:23+00:00","remoteAddr":"100.20.102.10","user":"XXXXXXXXXXXXX","app":"PHP","method":"PUT","url":"/remote.php/dav/uploads/XXXXXXXXXXXXX/33d2ef5f09c30aXXXXXXX859ed12b17/0000000000000000-0000000002XXXX16","message":"TypeError: Return value of OC\\Files\\Type\\Detection::loadCustomDefinitions() must be of the type array, null returned at /var/www/html/lib/private/Files/Type/Detection.php#137","userAgent":"Mozilla/5.0 (Android) Nextcloud-android/3.12.0","version":"18.0.6.0"}
when trying to update the installed apps with occ app::update --all, the following error appears:
An unhandled exception has been thrown:
TypeError: Return value of OC\Files\Type\Detection::loadCustomDefinitions() must be of the type array, null returned in /var/www/html/lib/private/Files/Type/Detection.php:137
Stack trace:
#0 /var/www/html/lib/private/Files/Type/Detection.php(175): OC\Files\Type\Detection->loadCustomDefinitions('mimetypemapping...', NULL)
#1 /var/www/html/lib/private/Files/Type/Detection.php(195): OC\Files\Type\Detection->loadMappings()
#2 /var/www/html/lib/private/Files/Storage/Common.php(250): OC\Files\Type\Detection->detectPath('appdata_oc5889o...')
#3 /var/www/html/lib/private/Files/Storage/Common.php(707): OC\Files\Storage\Common->getMimeType('appdata_oc5889o...')
#4 /var/www/html/lib/private/Files/Storage/Wrapper/Wrapper.php(582): OC\Files\Storage\Common->getMetaData('appdata_oc5889o...')
#5 /var/www/html/lib/private/Files/Cache/Scanner.php(113): OC\Files\Storage\Wrapper\Wrapper->getMetaData('appdata_oc5889o...')
#6 /var/www/html/lib/private/Files/Cache/Scanner.php(151): OC\Files\Cache\Scanner->getData('appdata_oc5889o...')
#7 /var/www/html/lib/private/Files/Cache/Scanner.php(337): OC\Files\Cache\Scanner->scanFile('appdata_oc5889o...', 3, -1, NULL, false)
#8 /var/www/html/lib/private/Files/Cache/Updater.php(124): OC\Files\Cache\Scanner->scan('appdata_oc5889o...', false, 3, false)
#9 /var/www/html/lib/private/Files/View.php(321): OC\Files\Cache\Updater->update('appdata_oc5889o...', 1592945462)
#10 /var/www/html/lib/private/Files/View.php(1177): OC\Files\View->writeUpdate(Object(OCA\Files_Trashbin\Storage), 'appdata_oc5889o...')
#11 /var/www/html/lib/private/Files/View.php(694): OC\Files\View->basicOperation('file_put_conten...', '/appdata_oc5889...', Array, '{"data":[{"id":...')
#12 /var/www/html/lib/private/Files/Node/File.php(71): OC\Files\View->file_put_contents('/appdata_oc5889...', '{"data":[{"id":...')
#13 /var/www/html/lib/private/Files/SimpleFS/SimpleFile.php(108): OC\Files\Node\File->putContent('{"data":[{"id":...')
#14 /var/www/html/lib/private/App/AppStore/Fetcher/Fetcher.php(173): OC\Files\SimpleFS\SimpleFile->putContent('{"data":[{"id":...')
#15 /var/www/html/lib/private/Installer.php(408): OC\App\AppStore\Fetcher\Fetcher->get()
#16 /var/www/html/core/Command/App/Update.php(103): OC\Installer->isUpdateAvailable('provisioning_ap...')
#17 /var/www/html/3rdparty/symfony/console/Command/Command.php(255): OC\Core\Command\App\Update->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#18 /var/www/html/3rdparty/symfony/console/Application.php(915): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#19 /var/www/html/3rdparty/symfony/console/Application.php(272): Symfony\Component\Console\Application->doRunCommand(Object(OC\Core\Command\App\Update), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#20 /var/www/html/3rdparty/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#21 /var/www/html/lib/private/Console/Application.php(214): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#22 /var/www/html/console.php(99): OC\Console\Application->run()
#23 /var/www/html/occ(11): require_once('/var/www/html/c...')
trying to reactivate the apps does not seem to help unfortunately…
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
The output of your Nextcloud log in Admin > Logging:
not accessible