Unable to start your application. Please refer to https://expo.fyi/no-registered-application for more information. at node_modules/react-native/Libraries/ReactNative/AppRegistry.js:200:6 in runApplication

[zhaoyangted]

Unable to start your application. Please refer to https://expo.fyi/no-registered-application for more information.
at node_modules/react-native/Libraries/ReactNative/AppRegistry.js:200:6 in runApplication
TypeError: undefined is not an object (evaluating '_expoModulesCore.NativeModulesProxy.ExpoCrypto')
at node_modules/react-native/Libraries/Core/ExceptionsManager.js:104:6 in reportException
at node_modules/react-native/Libraries/Core/ExceptionsManager.js:171:19 in handleException
at node_modules/react-native/Libraries/Core/setUpErrorHandling.js:24:6 in handleError
at node_modules/expo-error-recovery/build/ErrorRecovery.fx.js:12:21 in ErrorUtils.setGlobalHandler$argument_0

and where is google_services.json file, why do I need it when starting ios emulator?