Duplicati update issue

I use Duplicati to backup data to a Nextcloud instance via WebDav which works reliable. Usually I update whenever I see the notification that a new update is available but this didn&rsquo;t work well last time. I document it here since I couldn&rsquo;t find anything on the Duplicati forum. Maybe it helps others searching for this problem. The update to 2.1.0.2 itself worked but afterwards the…