title: Program type already present: com.google.android.gms.common.util.VisibleForTesting -':app:transformDexArchiveWithExternalLibsDexMergerForDebug'
body: <p>I am getting this error whenever I try to run a program in Android Studio 3.1.2. </p>
  
  <p>Program type already present: com.google.android.gms.common.util.VisibleForTesting
  Message{kind=ERROR, text=Program type already present: com.google.android.gms.common.util.VisibleForTesting, sources=[Unknown source file], tool name=Optional.of(D8)}</p>
  
  <p>My gradle Module app :   </p>
  
  <pre><code>buildscript {
  repositories {
      google()
      jcenter()
  
      maven {
          url "https://maven.google.com" // Google's Maven repository
      }
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:3.1.2'
      classpath 'com.google.gms:google-services:3.2.1'
  
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
  }
  </code></pre>
  
  <p>}</p>
  
  <pre><code>allprojects {
  repositories {
      google()
      jcenter()
  
      maven {
          url "https://maven.google.com"
      }
      maven {
          url "https://maven.fabric.io/public"
      }
  }
  </code></pre>
  
  <p>}</p>
  
  <pre><code>task clean(type: Delete) {
  delete rootProject.buildDir
  </code></pre>
  
  <p>}</p>
  
  <p>This is my Gradle Module app</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 27
  defaultConfig {
      applicationId "myproject"
      minSdkVersion 19
      targetSdkVersion 27
      versionCode 1
      versionName "1.0"
      multiDexEnabled true
      testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  
  compileOptions {
      sourceCompatibility JavaVersion.VERSION_1_8
      targetCompatibility JavaVersion.VERSION_1_8
  }
  </code></pre>
  
  <p>}</p>
  
  <pre><code>dependencies {
  implementation fileTree(dir: 'libs', include: ['*.jar'])
  //noinspection GradleCompatible
  implementation 'com.android.support:appcompat-v7:27.1.1'
  implementation'com.android.support:design:27.1.1'
  implementation 'com.android.support.constraint:constraint-layout:1.1.0'
  testImplementation 'junit:junit:4.12'
  androidTestImplementation 'com.android.support.test:runner:1.0.2'
  androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'enter code here
  
  
  
  // FirebaseUI for Firebase Auth
  implementation 'com.firebaseui:firebase-ui-auth:3.3.1'
  implementation 'com.google.firebase:firebase-auth:15.0.0'
  //Firebase RealTime Database
  implementation 'com.google.firebase:firebase-database:15.0.0'
  // FirebaseUI for Cloud Storage
  implementation 'com.firebaseui:firebase-ui-storage:3.3.1'
  implementation 'com.google.firebase:firebase-storage:15.0.0'
  
  //circleimageView
  implementation 'de.hdodenhof:circleimageview:2.1.0'
  
  //Libreria utilizada para medir dimension de layout de chat cuando cambia de tamaño
  implementation 'net.the4thdimension:android-utils:2.0.4'
  
  //To scale every screen sizes , sp
  implementation 'com.intuit.sdp:sdp-android:1.0.5'
  
  //authenticacion para formato de numero de telefono
  implementation 'com.googlecode.libphonenumber:libphonenumber:8.4.2'
  implementation 'com.weiwangcn.betterspinner:library-material:1.1.0'
  implementation 'com.amitshekhar.android:android-networking:1.0.0'
  
  //Volley
  implementation 'com.android.volley:volley:1.0.+'
  implementation 'org.apache.commons:commons-lang3:3.6'
  </code></pre>
  
  <p>}</p>
  
  <pre><code>apply plugin: 'com.google.gms.google-services'
  </code></pre>