EXPO: Unable to resolve module ‘./debugger

Question

After a reload my app has stopped loading.

I have tried on both emulators and 2 real devives, android and ios.

The error is:

Error: Unable to resolve module ./debugger-ui/debuggerWorker.d9da4ed7 from ``:

and occassionally I will get the error, 'unable to locate instance'.

I have tried the following:

1. Clear watchman watches: watchman watch-del-all .
2. Delete the node_modules folder: rm -rf node_modules && npm install .
3. Reset Metro Bundler cache: rm -rf /tmp/metro-bundler-cache-* or npm start -- --reset-cache .
4. Remove haste cache: rm -rf /tmp/haste-map-react-native-packager-* .

5. Restart the computer.

     Expo CLI 3.11.3 environment info:
       System:
         OS: macOS 10.15.2
         Shell: 5.7.1 - /bin/zsh
       Binaries:
         Node: 12.8.0 - ~/.nvm/versions/node/v12.8.0/bin/node
         Yarn: 1.19.1 - /usr/local/bin/yarn
         npm: 6.13.4 - ~/.nvm/versions/node/v12.8.0/bin/npm
         Watchman: 4.9.0 - /usr/local/bin/watchman
       IDEs:
         Android Studio: 3.5 AI-191.8026.42.35.5791312
         Xcode: 11.2/11B41 - /usr/bin/xcodebuild
       npmPackages:
         expo: ~36.0.0 => 36.0.2
         react: ~16.9.0 => 16.9.0
         react-native: https://github.com/expo/react-native/archive/sdk-36.0.0.tar.gz => 0.61.4
         react-navigation: ^4.0.10 => 4.0.10
       npmGlobalPackages:
         expo-cli: 3.11.3
   

Any ideas on what else I can try to resolve this?

The full error below:

Error: Unable to resolve module `./debugger-ui/debuggerWorker.d9da4ed7` from ``:

None of these files exist:
  * debugger-ui/debuggerWorker.d9da4ed7(.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/debuggerWorker.d9da4ed7/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 (/Users/serdarmustafa/task_location_namespace/node_modules/metro/src/node-haste/DependencyGraph/ModuleResolution.js:163:15)
    at ResolutionRequest.resolveDependency (/Users/serdarmustafa/task_location_namespace/node_modules/metro/src/node-haste/DependencyGraph/ResolutionRequest.js:52:18)
    at DependencyGraph.resolveDependency (/Users/serdarmustafa/task_location_namespace/node_modules/metro/src/node-haste/DependencyGraph.js:282:16)
    at /Users/serdarmustafa/task_location_namespace/node_modules/metro/src/lib/transformHelpers.js:267:42
    at /Users/serdarmustafa/task_location_namespace/node_modules/metro/src/Server.js:1305:37
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (/Users/serdarmustafa/task_location_namespace/node_modules/metro/src/Server.js:99:24)
    at _next (/Users/serdarmustafa/task_location_namespace/node_modules/metro/src/Server.js:119:9)
    at processTicksAndRejections (internal/process/task_queues.js:85:5)

Answer 1

I solved this error by stopping the debugger cmd + d && Stop debugging then doing a hard reload on the open debugger tab in chrome alt + control + click on reload button and choose Empty cache and hard reload then restart debugger.