buildscript { repositories { google() jcenter() mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:4.1.3' classpath 'com.google.gms:google-services:4.3.5' } } allprojects { repositories { google() jcenter() mavenCentral() } } task clean(type: Delete) { delete rootProject.buildDir } ext { compileAndTargetSdkVersion = 30 }