Critical Error Occured - App

My App started showing this error recently, both in a version emulated through SAP itself and in the APK generated and installed (For now, I only generated the version for Android).
I took a screenshot to better demonstrate the error.

Would anyone know the reason for this problem?

The current build engine is pretty buggy. I´ve had more crashes the past month than the previous 18 months. None were consistently repeatable, which rules out a real flow issue being the cause. My app now just randomly crashes, after 18 months of being very stable.

So is there nothing that can be done but wait for some more stable version of the build engine?