Module AppRegistry is not registered callable module (calling runApplication)
Just kill all node process and start npm server and run application: Step1: run command killall -9 node For windows users, run: taskkill /im node.exe Run taskkill /f /im node.exe if the process still persists. Step2: run command npm start –reset-cache Step3: run command react-native run-ios OR react-native run-android