@Roger, @agriesser: I just now noticed that the “Incoming Webhooks” view in my instance is empty, even though I have at least two Incoming Webhooks which work just fine…
I found [SOLVED] Cannot view incoming webhooks under integrations in UI which sounds similar and was solved by - as I understand it - reinstalling the whole instance from scratch, which I cannot really do.
A difference is that I don’t observe any 500 error codes, as far as I can tell.
I just now want to exclude that it’s somehow related to the MariaDB-PostgreSQL conversion - does anyone of you use Incoming Webhooks, are they displayed, and were they created before or after the conversion to PostgreSQL?
I’m using Mattermost 8.1.x with PostgreSQL 15.5 on Debian 12 “Bookworm”.