Access Forbidden post 1.2.20 upgrade

Hi guys, I’ve been using Kanboard for a while now and performed several version upgrades. This time thou, everything seems normal until I drag a card to a new column - Then I get “Access Forbidden” in a pop-up. Not sure if I’ve done something wrong this time around or 1.2.20 has an issue? Any thoughts?

I migrated and since then I have the same problem as you and randomly since the migration.

Hi same for me installed on pi4 via docker was working ok untill about 1 hour ago