Upgrade fails with code integrity chck

[john-2000]

Steps to reproduce

1. run upgrade from 20.0.1 to 20.0.2 via web updater or terminal
2. update fails

Expected behaviour

upgrade should complete

Actual behaviour

Upgrade fails with:

Starting code integrity check...
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/nextcloud/lib/private/Files/Type/Detection.php:145
Stack trace:
#0 /var/www/nextcloud/lib/private/Files/Type/Detection.php(157): OC\Files\Type\Detection->loadCustomDefinitions()
#1 /var/www/nextcloud/lib/private/Files/Type/Detection.php(164): OC\Files\Type\Detection->loadAliases()
#2 /var/www/nextcloud/lib/private/IntegrityCheck/Checker.php(210): OC\Files\Type\Detection->getAllAliases()
#3 /var/www/nextcloud/lib/private/IntegrityCheck/Checker.php(378): OC\IntegrityCheck\Checker->generateHashes()
#4 /var/www/nextcloud/lib/private/IntegrityCheck/Checker.php(558): OC\IntegrityCheck\Checker->verify()
#5 /var/www/nextcloud/lib/private/IntegrityCheck/Checker.php(579): OC\IntegrityCheck\Checker->verifyCoreSignature()
#6 /var/www/nextcloud/lib/private/Updater.php(283): OC\IntegrityCheck\Checker->runInstanceVerification()
#7 /var/www/nextcloud/lib/private/Updater.php(130): OC\Updater->doUpgrade()
#8 /var/www/nextcloud/core/Command/Upgrade.php(255): OC\Updater->upgrade()
#9 /var/www/nextcloud/apps/mail/vendor/symfony/console/Command/Command.php(258): OC\Core\Command\Upgrade->execute()
#10 /var/www/nextcloud/apps/mail/vendor/symfony/console/Application.php(920): Symfony\Component\Console\Command\Command->run()
#11 /var/www/nextcloud/apps/mail/vendor/symfony/console/Application.php(266): Symfony\Component\Console\Application->doRunCommand()
#12 /var/www/nextcloud/apps/mail/vendor/symfony/console/Application.php(142): Symfony\Component\Console\Application->doRun()
#13 /var/www/nextcloud/lib/private/Console/Application.php(215): Symfony\Component\Console\Application->run()
#14 /var/www/nextcloud/console.php(100): OC\Console\Application->run()
#15 /var/www/nextcloud/occ(11): require_once('/var/www/nextcl...')

Server configuration

Ubuntu 20.04

Apache2

MariaDB

PHP 7.4.3

NC 20.0.2

Update from NC 20.0.1

Web updated

[szaimen]

Is this Issue still valid in NC21.0.2? If not, please close this issue. Thanks! :)

[ghost]

This issue has been automatically marked as stale because it has not had recent activity and seems to be missing some essential information. It will be closed if no further activity occurs. Thank you for your contributions.