Firebase: Debugging insufficient permissions

Question

Uncaught (in promise) Error: Missing or insufficient permissions.

I have a large app and expanding the error object is not helping me at all. Is there a way to read the permissions error log in Firestore so I can see what document or collection was disallowed?

Answer 1

I went from having no information about the error to:

Uncaught FirebaseError: 
false for 'get' @ L167, false for 'get' @ L207

By using the firebase firestore emulator . I highly recommend it, along with the using the emulator UI.