Geoserver partially unresponsive (turn pages, add layer)

Hi all!
I have been running a more or less stable geoserver version 2.26.1 . Today i realized that i cant add new layers anymore. If i click ‘new layer’ and choose my workspace, nothing happens, geoserver doesnt show my layers in that space. I looked around and realized that i also cannot change the language or go on my second page of layers. log didnt catch anything out of the ordinary. Im stumped.
Would this be the right place to ask for help?

Hi @vulpes-berolinensis , sure, we’re here to help.

If you open Dev Tools in your browser, do you find any errors (CSP, perhaps) in the console?

Peter

Thanks so much!
Yes, that seems to give me a 400 bad request error. Looking over my permissions and Certificates, probably the issue is somewhere in there.