title: React-Native-CLI & Android :Failed to start the app. Make sure you have the Android development environment set up
body: <p>I can't run an existing react-native-cli app into my android device.
  Similar thing happened for iOS emulator, but I'm managed to solve it.
  So now I can only run into iOS not android. Please take a look at the error message and tell me what to do.</p>
  <pre><code>FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':app:installDebug'.
  &gt; com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.banana.apple signatures do not match previously installed version; ignoring!
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
  
  * Get more help at https://help.gradle.org
  
  BUILD FAILED in 9s
  
  error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/environment-setup. Run CLI with --verbose flag for more details.
  Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081
  Unable to install C:\Users\Admin\Desktop\Materials\Source Code\PunreachAPP\android\app\build\outputs\apk\debug\app-debug.apk
  </code></pre>