title: Android Studio - Error:Program type already present
body: <p>When I try to compile the code, the following error appears on Android Studio 3.0.1 </p>
  
  <pre><code>Error:Program type already present: com.squareup.picasso.Action$RequestWeakReference
  </code></pre>
  
  <p>My gradle code:</p>
  
  <pre><code>  ...
      compile 'com.android.support:appcompat-v7:26.1.0'
      compile 'com.android.support:design:26.1.0'
      compile 'com.android.support:support-v4:26.1.0'
      compile 'com.android.support:support-vector-drawable:26.1.0'
      compile 'com.android.support.constraint:constraint-layout:1.1.0-beta4'
      compile 'com.google.firebase:firebase-messaging:11.8.0'
      compile 'com.google.firebase:firebase-ads:11.8.0'
      compile 'com.google.gms:google-services:3.1.0'
      compile 'com.google.android.gms:play-services:11.8.0'
      compile 'com.squareup.picasso:picasso:2.5.2'
      testCompile 'junit:junit:4.12'
  
  }
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>How do I fix my gradle script to fix the error? </p>