Error 503 Backend fetch failed on cloned app


I’ve cloned my app and tied it to another domain. Basically setting up a staging server. Now, very often, when using my app on the staging server I get the below error 503. But the odd thing is, this app isn’t any different from the app it was cloned from. Both apps connect to the same database.


Resurrecting an old post as we’ve been having this exact issue across multiple applications and servers, anyone got any ideas?