Gradle Sync Failed: Could Not Find Method Implementation()

Been trying to resolve this error for hours...cant get it solved. I am a newbie to Android Studio My project level build.gradle file is as follows // Top-level build file where

Solution 1:

with build-tools 3.1.4, it should become known (read below):

classpath "com.android.tools.build:gradle:3.1.4"

but if you cannot update Android Studio , use compile instead of implementation.

compile"com.google.firebase:firebase-core:16.0.3"