title: Expo React-Native Debugger - Error: Unable to resolve module `./debugger-ui/debuggerWorker.cff11639.js` from ``
body: <p>I'm just starting out with React-Native Expo with a blank app that is running fin in Android emulator. But I'm getting an error when trying to use react-native debugger from developer tools in Chrome.</p>
  <p>I select &quot;Debug Remote JS&quot; from the Developer menu in Expo  <a href="https://i.stack.imgur.com/Fe8K7.png" rel="nofollow noreferrer">on the emulator </a>that opens this window in Chrome
  <a href="https://i.stack.imgur.com/V2NKr.png" rel="nofollow noreferrer">https://i.stack.imgur.com/V2NKr.png</a></p>
  <p>From here soon as I open developer tools in chrome I get following error:</p>
  <pre><code>Error: Unable to resolve module `./debugger-ui/ui.bcd3f9d1.js` from ``: 
  
  None of these files exist:
    * debugger-ui\ui.bcd3f9d1.js(.native|.native.expo.ts|.expo.ts|.native.expo.tsx|.expo.tsx|.native.expo.js|.expo.js|.native.expo.jsx|.expo.jsx|.native.ts|.ts|.native.tsx|.tsx|.native.js|.js|.native.jsx|.jsx|.native.json|.json|.native.wasm|.wasm)
    * debugger-ui\ui.bcd3f9d1.js\index(.native|.native.expo.ts|.expo.ts|.native.expo.tsx|.expo.tsx|.native.expo.js|.expo.js|.native.expo.jsx|.expo.jsx|.native.ts|.ts|.native.tsx|.tsx|.native.js|.js|.native.jsx|.jsx|.native.json|.json|.native.wasm|.wasm)
      at ModuleResolver.resolveDependency (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\node-haste\DependencyGraph\ModuleResolution.js:163:15)
      at ResolutionRequest.resolveDependency (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\node-haste\DependencyGraph\ResolutionRequest.js:52:18)
      at DependencyGraph.resolveDependency (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\node-haste\DependencyGraph.js:287:16)
      at C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\lib\transformHelpers.js:267:42   
      at Server.&lt;anonymous&gt; (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\Server.js:841:41)
      at Generator.next (&lt;anonymous&gt;)
      at asyncGeneratorStep (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\Server.js:99:24)
      at _next (C:\Users\Daniel\Projects.ReactNative\MyApp\node_modules\metro\src\Server.js:119:9)
  </code></pre>
  <p>Also get these warnings inside chrome console:</p>
  <pre><code>DevTools failed to load SourceMap: Could not load content for http://localhost:19001/debugger-ui/ui.bcd3f9d1.js.map: HTTP error: status code 500, net::ERR_HTTP_RESPONSE_CODE_FAILURE
  DevTools failed to load SourceMap: Could not load content for http://localhost:19001/debugger-ui/ui.7beef9ab.css.map: HTTP error: status code 500, net::ERR_HTTP_RESPONSE_CODE_FAILURE
  DevTools failed to load SourceMap: Could not load content for http://localhost:19001/debugger-ui/debuggerWorker.cff11639.js.map: HTTP error: status code 500, net::ERR_HTTP_RESPONSE_CODE_FAILURE
  </code></pre>
  <p>I've tried:</p>
  <ul>
  <li>Deleting <code>node_modules</code> and <code>package-lock.json</code> then <code>npm install</code></li>
  <li>Empty Cache and Hard Reload in Chrome developer tools</li>
  <li>Clearing Expo cache, <code>expo r -c</code></li>
  <li>reinstalling Expo on Android Virtual Device</li>
  </ul>