Upgrade from Nextcloud 12.0.0 to 12.0.4 not working

ℹ️ Support
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1

When I use the web updater and click “Start Update” nothing happens. When I use the console via sudo -u www-data php updater.phar I get:

 PHP Fatal error:  Class OCA\User_SAML\UserBackend contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (OCP\Authentication\IApacheBackend::getLogoutUrl) in /disk0/nextcloud/apps/user_saml/lib/userbackend.php on line 34
2

Perhaps file an issue on github.com/nextcloud/server/issues
If you want to proceed without solving this issue, you could do a manual update (check documentation).

3

In case anyone else runs into this I was able to easily fix by running sudo -u www-data php occ app:disable user_saml.