Could not save this module: Request failed with status code 400

Hi, when adding new record fields (and other things) I often receive a 400 error code. Server logs show nothing, it appears like the browser dropped the session. It always works if I refresh and do the same action again without any delay

Can you provide some details about your setup; OS, browser, any extensions that would block webpage functionality?
Is your instance deployed on a server or locally on your machine?

If it happens after a while it might be that your auth token has expired and it wasn’t able to re-fetch it in time.

Do you see any errors in the console?
Can you check your network tab and inspect the failed request (there should be a detailed response tab that shows exactly what went wrong).