Execution failed for task ':app:uploadCrashlyticsMappingFileRelease'

Reason: This problem is caused by the use of Google’s firebase library, which is the culprit:

com.google.firebase:firebase-crashlytics

Solution: Add the following code to Android {} of gradle of app

gradle.taskGraph.whenReady {
    tasks.each { task ->
        if (task.name.contains("uploadCrashlyticsMappingFileRelease")) {
            task.enabled = false
        }
    }
}