cooking my eggs on android studio today

Started a side project.
Learnt flutter and firebase.
Started coding app.
Four months pass by.
App is mostly ready.
Wakes up on Saturday morning.
Updates Android Studio and SDK because, why not?

Build failed!
Dependency depreciation warnings!
Java errors!
Firebase errors!
Emulator stopped running!

Wify is angry with me as we planned shopping but now this. Fortunately, she's also in IT, so she understands..

FML! Spent the entire day stackoverflowing and fixing errors!

8PM evening, I am back to Friday's status. My shoulder and neck hurts but my mind is chilled.

Anyone encountered this type of error before? When trying to run AVD in android studio

Can you give me some tips on how to debug a massive app? (Android app running on android studio which is basically intellij idea).

For example I need to fix a bug where a certain action results in unexpected behaviour.

But oh my god the codebase is so large (mainly architecture is MVVM and rxjava) that searching for the specific place is like searching for a needle in haystack.

For example I added a breakpoint in few places, but I can see only like 4 or 5 last frames in the stack that led to the current action, last frame is a lambda which doesnt help me so frankly Im unable to even track where current event started. I am loosing my mind. I cant even find where the buttonclick action started because everything is reactive and done with observables which can be anywhere.

Any tips on debugging will be appreciated

Android Studio sucks!!! Genymotion is amazing!!