Tried update - Nextcloud sticks to maitenance-modus

Hi, yesterday I tried update from Nextcloud 13 to Nextcloud 14. I used the webinterface. During the backup an error occured. Now Nextcloud is in maitenance-modus and I can’t use my calender anymore :frowning:
What can I do?

Nextcloud is hosted on a hostingservice (1&1 / INONOS). I have access via FTP and SSH - but I cannot use the sudo command. Also I couldn’t start occ. PHP Version 7.2.11.
Is there a way simply to stop the process and get back the access to my calender?

Set

‘maintenance’ => false,

in /var/www/nextcloud/config/config.php

Same problem here.
Changing the setting in the config file helps, but does not remuve the root cause.

In my case, every week or so nextcloud switches into maintenance mode and never comes back.

So I need to reset this setting each and every time.

Is there anything else I can do to finally fix this?

Thank you. That works so far.