Hi,
I’m currently running version 12 on a Ubuntu 16.04 LTS server
I have been seeing this error messages here and there in the logfile.
Error PHP Undefined offset: 3 at /var/www/nextcloud/apps/activity/lib/FilesHooks.php#620
According to this link this should solve the issue:
But where is the file located? I don’t know where to find it.