title: react native application on emulator stuck on white screen
body: <p>on android only and only in the emulator, if I run my react native app, the app does not launch and get stuck on a white screen. The bundler in the terminal does not receive any connections requests.</p>
  
  <p>It used to work and it works when I run on a device using the same command  (react-native run-android)</p>
  
  <p>I'm on react native 0.57.8</p>
  
  <p><a href="https://i.stack.imgur.com/7NjiE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7NjiE.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/KyPgJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KyPgJ.png" alt="enter image description here"></a></p>
  
  <p>Here are the logs I get from react-native log-android:</p>
  
  <pre><code>    02-26 17:12:21.527  6544  6544 D ReactNative: ReactInstanceManager.ctor()
      02-26 17:12:21.606  6544  6544 D ReactNative: ReactInstanceManager.createReactContextInBackground()
      02-26 17:12:21.606  6544  6544 D ReactNative: ReactInstanceManager.recreateReactContextInBackgroundInner()
      02-26 17:12:21.629  6544  6544 D ReactNative: ReactInstanceManager.recreateReactContextInBackgroundFromBundleLoader()
      02-26 17:12:21.629  6544  6544 D ReactNative: ReactInstanceManager.recreateReactContextInBackground()
      02-26 17:12:21.629  6544  6544 D ReactNative: ReactInstanceManager.runCreateReactContextOnNewThread()
      02-26 17:12:21.665  6544  6604 D ReactNative: ReactInstanceManager.createReactContext()
      02-26 17:12:21.727  6544  6604 D ReactNative: Initializing React Xplat Bridge.
      02-26 17:12:21.729  6544  6604 D ReactNative: Initializing React Xplat Bridge before initializeBridge
      02-26 17:12:21.735  6544  6604 D ReactNative: Initializing React Xplat Bridge after initializeBridge
      02-26 17:12:21.735  6544  6604 D ReactNative: CatalystInstanceImpl.runJSBundle()
  </code></pre>
  
  <p>I even tried reverting to older code version via git to version that I know worked, but that still fails, so I think there might be a configuration issue with my machine and the emulator, but I'm unsure what.</p>
  
  <p>Any idea what might be causing this issue?</p>