위치정보 가져오기 메인페이지 코드를 붙여 넣으면 다음과 같은 오류가 발생합니다.

[Unhandled promise rejection: ReferenceError: Can't find variable: Alert]

at node_modules\@babel\runtime\helpers\asyncToGenerator.js:null in asyncGeneratorStep

at node_modules\@babel\runtime\helpers\asyncToGenerator.js:null in _throw

at node_modules\promise\setimmediate\core.js:null in tryCallOne

at node_modules\promise\setimmediate\core.js:null in setImmediate$argument_0

at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _allocateCallback$argument_0

at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _callTimer

at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in _callReactNativeMicrotasksPass

at node_modules\react-native\Libraries\Core\Timers\JSTimers.js:null in callReactNativeMicrotasks

at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __callReactNativeMicrotasks

at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard$argument_0

at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard

at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in flushedQueue