Invariant Violation: TurboModuleRegistry.getEnforcing(...): 'DevSettings' could not be found

Question

App get crashed with the above message. Unable to view my app screen.

Invariant Violation: TurboModuleRegistry.getEnforcing(...): 'DevSettings' could not be found. Verify that a module by this name is registered in the na..., stack:

platform :ios, '9.0'
require_relative '../node_modules/@react-native-community/cli-platform-ios/native_modules'

target 'App' do
  # Pods for App
  pod 'FBLazyVector', :path => "../node_modules/react-native/Libraries/FBLazyVector"
  #pod 'BVLinearGradient', :path => '../node_modules/react-native-linear-gradient'
  pod 'FBReactNativeSpec', :path => "../node_modules/react-native/Libraries/FBReactNativeSpec"
  pod 'RCTRequired', :path => "../node_modules/react-native/Libraries/RCTRequired"
  pod 'RCTTypeSafety', :path => "../node_modules/react-native/Libraries/TypeSafety"
  pod 'React', :path => '../node_modules/react-native/'
  pod 'React-Core', :path => '../node_modules/react-native/'
  pod 'React-CoreModules', :path => '../node_modules/react-native/React/CoreModules'
  pod 'React-Core/DevSupport', :path => '../node_modules/react-native/'
  pod 'React-RCTActionSheet', :path => '../node_modules/react-native/Libraries/ActionSheetIOS'
  pod 'React-RCTAnimation', :path => '../node_modules/react-native/Libraries/NativeAnimation'
  pod 'React-RCTBlob', :path => '../node_modules/react-native/Libraries/Blob'
  pod 'React-RCTImage', :path => '../node_modules/react-native/Libraries/Image'
  pod 'React-RCTLinking', :path => '../node_modules/react-native/Libraries/LinkingIOS'
  pod 'React-RCTNetwork', :path => '../node_modules/react-native/Libraries/Network'
  pod 'React-RCTSettings', :path => '../node_modules/react-native/Libraries/Settings'
  pod 'React-RCTText', :path => '../node_modules/react-native/Libraries/Text'
  pod 'React-RCTVibration', :path => '../node_modules/react-native/Libraries/Vibration'
  pod 'React-Core/RCTWebSocket', :path => '../node_modules/react-native/'
  pod 'rn-fetch-blob', :path => '../node_modules/rn-fetch-blob'

  pod 'React-cxxreact', :path => '../node_modules/react-native/ReactCommon/cxxreact'
  pod 'React-jsi', :path => '../node_modules/react-native/ReactCommon/jsi'
  pod 'React-jsiexecutor', :path => '../node_modules/react-native/ReactCommon/jsiexecutor'
  pod 'React-jsinspector', :path => '../node_modules/react-native/ReactCommon/jsinspector'
  pod 'ReactCommon/jscallinvoker', :path => "../node_modules/react-native/ReactCommon"
  pod 'ReactCommon/turbomodule/core', :path => "../node_modules/react-native/ReactCommon"
  pod 'Yoga', :path => '../node_modules/react-native/ReactCommon/yoga'

  pod 'DoubleConversion', :podspec => '../node_modules/react-native/third-party-podspecs/DoubleConversion.podspec'
  pod 'glog', :podspec => '../node_modules/react-native/third-party-podspecs/glog.podspec'
  pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'

  pod 'react-native-cameraroll', :path => '../node_modules/@react-native-community/cameraroll'

  target 'AppTests' do
    inherit! :search_paths
    # Pods for testing
  end

  use_native_modules!
end

target 'App-tvOS' do
  # Pods for App-tvOS

  target 'App-tvOSTests' do
    inherit! :search_paths
    # Pods for testing
  end

end

Answer 1

I had the same error and the problem was that I built the app in Release mode but the main.jsbundle was dev mode.

Using [email protected]

I stopped the Metro process and run again

react-native run-ios --configuration Release --device --scheme="MyTargetScheme"

Answer 2

For us the issue was that we were (manually) building the RN bundle for our production app without setting the dev value in the react-native CLI.

When testing on simulator or device with a debug configuration in Xcode, this was not a problem. But since we archive for the App Store with a release config, we were seeing this crash in production.

The react-native bundle command has the --dev switch set to true by default. So the solution was simply to add --dev false to the bundle command.