build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()  // Google's Maven repository
        jcenter()
        mavenCentral()

        // Remove Fabric's Maven repository.
        // maven { url 'https://maven.fabric.io/public' }

    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.2'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath 'com.google.gms:google-services:4.3.3' //< update this

        // Remove the Fabric Gradle plugin.
        // classpath 'io.fabric.tools:gradle:1.31.2'

        // Add the Firebase Crashlytics Gradle plugin.
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.0.0-beta04'

        classpath 'com.jakewharton:butterknife-gradle-plugin:10.2.1'
    }
}

allprojects {
    repositories {
        google()
        jcenter()

        maven { url "https://oss.jfrog.org/libs-snapshot" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}