ArcGIS Enterprise 11 now allows for custom widgets to be used directly in ArcGIS Portal's Experience Builder. In testing this, we discovered that if an Experience Builder app is built using a custom widget, and then later that custom widget is deleted from the Portal's content, the Experience builder app will be rendered useless and need to be deleted and recreated from scratch.
I understand how something that was deleted could no longer be accessed, but why cause then entire app to no longer function rather than having the ability to "remove" or "repair" the individual item (in this case a missing custom widget)?
Instead, we get the full screen error message below:
CONT_0001: Item does not exist or is inaccessible.