Why the mood detection function doesn't work?

Hello, I used your app last year, it's awesome. But recently I found the mood detection function couldn't work anymore. Do you know the reason? Thank you!

The issue does not identify a file, test, device, or reproduction steps. Start by locating the mood detection entry point in the Android application and reproduce the failure with the current app; done means the mood detection function works again and the regression is covered by an appropriate check.

Written by the indexing model from the issue text.