I have been working with ionic + firebase, everything was working well in serve and android, but ultimately doesn’t work on android, the error is:
This error came when I started to use a repository.
I don’t understand what happened.
Nota: I am using cdn to firebase and angularFire
Had the same error, try to reoganize the order you import the scripts in your index.html.
try this sequence
EDIT: Avoid use the URL to firebase site , download the js file and put in you lib folder.