title: Execution failed for task ':app:compileDebugJavaWithJavac':
body: <p>When I try <code>$ react-native run-android</code> on android emulator, I get this error:</p>
  
  <pre><code>:app:compileDebugJavaWithJavac
  /home/user/app/android/app/src/main/java/com/package/MainApplication.java:8: error: a type with the same simple name is already defined by the single-type-import of RNAWSCognitoPackage
  import com.airlabsinc.RNAWSCognitoPackage;
  ^
  1 error
  Incremental compilation of 1 classes completed in 0.448 secs.
  :app:compileDebugJavaWithJavac FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':app:compileDebugJavaWithJavac'.
  &gt; Compilation failed; see the compiler error output for details.
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  
  BUILD FAILED
  
  Total time: 10.964 secs
  Could not install the app on the device, read the error above for details.
  Make sure you have an Android emulator running or a device connected and have
  set up your Android development environment:
  https://facebook.github.io/react-native/docs/getting-started.html
  </code></pre>
  
  <p>Then I have 2 imports with the same name in my <code>/home/user/app/android/app/src/main/java/com/package/MainApplication.java</code>
  May this cause the issue?
  Is this the issue with RN?</p>
  
  <pre><code>package com.package;
  
  import android.app.Application;
  
  import com.facebook.react.ReactApplication;
  import com.amazonaws.RNAWSCognitoPackage; // 1
  import com.amazonaws.amplify.pushnotification.RNPushNotificationPackage;
  import com.airlabsinc.RNAWSCognitoPackage; // 2
  import com.horcrux.svg.SvgPackage;
  import com.toast.ToastPackage;
  import com.vdi.VDIPackage;
  import com.BV.LinearGradient.LinearGradientPackage;
  import com.facebook.react.ReactNativeHost;
  import com.facebook.react.ReactPackage;
  import com.facebook.react.shell.MainReactPackage;
  import com.facebook.soloader.SoLoader;
  
  import java.util.Arrays;
  import java.util.List;
  </code></pre>
  
  <p>My env:</p>
  
  <pre><code>**Environment**:
    * OS: Linux 4.13
    * Node: 8.9.4
    * Yarn: Not Found
    * npm: 5.6.0
    * Watchman: Not Found
    * Xcode: N/A
    * Android Studio: Not Found
  
  **Packages**: (wanted =&gt; installed)
    * react: 16.3.0-alpha.2 =&gt; 16.3.0-alpha.2
    * react-native: 0.54.2 =&gt; 0.54.2
  </code></pre>