In the timeline at the bottom it says:

2023-05-05: Converso asks: ‘How were you able to decompile the source code of the app and what do you think should be done to protect against that in the future?’

So I think some of the devs were in way over their heads too!

Oh yes, sorry

The error it gives is that the inner bubblePredicate has an Unhandled exception type IOException.