This situation has been resolved as of 16:41 UTC . A database operation resulted in a spike in messages that needed to be processed by a backend service that powers live updates. The guardrail for the database operation that prevents the flood of messages had failed.

A fix has been implemented and we are monitoring the results.

We are continuing to investigate errors when creating or deleting triggers and widgets in the App Editor. If you see an error, the change may still have been saved. Before trying again, do a hard refresh (Ctrl+Shift+R on Windows, Cmd+Shift+R on Mac) or log out and back in.

We are investigating reports of errors when creating or deleting triggers and widgets in the App Editor.