Hi
I'm using Experience Builder to build a web-app for a deparment in our municipality, but without warning it now prevents me from saving the project i only get a "Saving Error" in experience builder, but the console log hints to some potential sources of error:
onSaveClick is undefined in https://kart.bergen.kommune.no/portal/apps/experiencebuilder/builder/../builder/widgets/header/dist/runtime/widget.js:1
Also I get a ArcGISRequestError with: HTTP 500: Server Error: Internal Server Error
I did a couple of changes yesterday, which got saved. I exited the Experience Builder just to come back later in the day to find out that any new changes after the last ones causes this error. And yes: I have tried to revert the last changes that I did, but to no avail. I can't do any changes to the project anymore.
Experience Builder is probably version 1.2 or 1.3, and runs on ArcGIS Enterprise 10.8.1: I have also checked the ArcGIS Server logs but it didn't provide any useful information, it doesn't even address any errors whatsoever.
What is also very stange is that this error causes the entire Enterprise System to stop for several seconds and then comes back online:

Is this familiar to anyone? It sounds like a really critical bug since it breaks the entire ArcGIS Enterprise System.