I am trying to add new dropdown list in admin menu and I always end up with the same error. Editing of existing dropdown list works.
ERROR: There was an error during your upload, please contact an administrator for help.
- An error has occurred. Please refresh your page and try again.
Console error, probably just side effect:
index.php:1 Failed to load resource: the server responded with a status of 403 (Forbidden)
No errors in prod.log
Client: Chrome latest
Server: Apache 2.4, PHP 7.4, Debian-based custom Docker image
Is there anything I can try to make it work?