title: React Native android compilation: Execution failed for task ':app:transformClassesWithDexForDebug'
body: <p>Everytime I build for android the default React Native projects, I get the following error:</p>
  
  <pre><code>UNEXPECTED TOP-LEVEL EXCEPTION:
  com.android.dex.DexException: Multiple dex files define Lcom/google/firebase/iid/zzc;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/xJOZR.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xJOZR.jpg" alt="error"></a></p>
  
  <p>I followed all the instructions on the react native "get started" page.</p>