title: How to resolve duplicate entry: com/android/volley/AuthFailureError.class error
body: <p>I'm using the Linkedin API with the volley+Fb and I'm getting the following error:</p>
  
  <pre><code>Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug'
  </code></pre>
  
  <p>Here is my Gradle file:</p>
  
  <pre><code>multiDexEnabled true
      testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
  }
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'}}}dependencies {compile fileTree(include: ['*.jar'], dir: 'libs')
  androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
      exclude group: 'com.android.support', module: 'support-annotations'
  })
  compile 'com.android.volley:volley:1.0.0'
  compile 'com.readystatesoftware.sqliteasset:sqliteassethelper:+'
  testCompile 'junit:junit:4.12'
  compile 'com.android.support:design:25.3.1'
  compile 'com.android.support:recyclerview-v7:25.3.1'
  compile 'com.squareup.picasso:picasso:2.3.2'
  compile 'com.google.android.gms:play-services-wallet:10.2.1'
  compile 'com.facebook.android:facebook-android-sdk:4.6.0'
  compile 'com.android.support:cardview-v7:25.3.1'
  compile 'com.google.firebase:firebase-messaging:10.2.1'
  compile 'com.google.firebase:firebase-core:10.2.1'
  compile 'com.android.support:support-v4:25.3.1'
  compile 'com.google.android.gms:play-services:10.2.1'
  compile 'com.google.android.gms:play-services-analytics:10.2.1'
  compile 'de.hdodenhof:circleimageview:2.1.0'
  compile 'com.android.support:multidex:1.0.1'
  //    compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
  compile('com.paypal.sdk:paypal-android-sdk:2.14.4') {
      exclude group: 'io.card'
  }
  compile project(path: ':linkedin-sdk')}
  </code></pre>