I try to setup Firebase Crashlytics after done setup Firebase.
The crashes was sent successfully.
Which I can see them in firebase dashboard.
Try updating your dependencies according to the Get Started page.
It should be something like:
implementation 'com.google.firebase:firebase-core:16.0.7' implementation('com.crashlytics.sdk.android:crashlytics:2.9.9')
Remove the line:
transitive = true;