@nebulon said in ChangeDetection Error: "The CSRF token has expired.": CSRF token are to prevent request replay attacks. I don't know much about the context here for this app, but if you refresh the page and perform the action again, does it work then or is this somehow related to the app you are trying to add, which reports this? Thanks. Waiting and refreshing seems to have solved this issue.

Maybe needs a suggestion in the upstream project.