* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

어제만 해도 잘 되었는데... 오늘 실행하니 이게 뜨네요오...

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.


Check the render method of `App`.


This error is located at:
    in EnsureSingleNavigator
    in BaseNavigationContainer
    in ThemeProvider
    in NavigationContainerInner (created by App)
    in App (created by withDevTools(App))
    in withDevTools(App)
    in RCTView (created by View)
    in View (created by AppContainer)
    in RCTView (created by View)
    in View (created by AppContainer)
    in AppContainer
    in main(RootComponent)
at node_modules\react-native\Libraries\Core\ExceptionsManager.js:null in reportException
at node_modules\react-native\Libraries\Core\ExceptionsManager.js:null in handleException
at node_modules\react-native\Libraries\Core\setUpErrorHandling.js:null in handleError
at node_modules\expo\build\errors\ExpoErrorManager.js:null in errorHandler
at node_modules\expo\build\errors\ExpoErrorManager.js:null in <anonymous>
at node_modules\@react-native\polyfills\error-guard.js:null in ErrorUtils.reportFatalError
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in callFunctionReturnFlushedQueue


Warning: React.jsx: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: %s.%s%s, object,  You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.


Check the render method of `App`., 
    in App (created by withDevTools(App))
    in withDevTools(App)
    in RCTView (created by View)
    in View (created by AppContainer)
    in RCTView (created by View)
    in View (created by AppContainer)
    in AppContainer
    in main(RootComponent)
at node_modules\react\cjs\react-jsx-runtime.development.js:null in printWarning
at node_modules\react\cjs\react-jsx-runtime.development.js:null in error
at node_modules\react\cjs\react-jsx-runtime.development.js:null in jsxWithValidation
at App.js:null in App
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in renderWithHooks
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in mountIndeterminateComponent
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in beginWork$1
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in performUnitOfWork
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in workLoopSync
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in renderRootSync
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in performSyncWorkOnRoot
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in flushSyncCallbacks
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in flushSyncCallbacksOnlyInLegacyMode
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in scheduleUpdateOnFiber
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in updateContainer
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in render
at node_modules\react-native\Libraries\ReactNative\renderApplication.js:null in renderApplication
at node_modules\react-native\Libraries\ReactNative\AppRegistry.js:null in runnables.appKey.run
at node_modules\react-native\Libraries\ReactNative\AppRegistry.js:null in runApplication
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __callFunction
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __guard$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 callFunctionReturnFlushedQueue


Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.


Check the render method of `App`.


This error is located at:
    in EnsureSingleNavigator
    in BaseNavigationContainer
    in ThemeProvider
    in NavigationContainerInner (created by App)
    in App (created by withDevTools(App))
    in withDevTools(App)
    in RCTView (created by View)
    in View (created by AppContainer)
    in RCTView (created by View)
    in View (created by AppContainer)
    in AppContainer
    in main(RootComponent)
at node_modules\react-native\Libraries\Core\ExceptionsManager.js:null in reportException
at node_modules\react-native\Libraries\Core\ExceptionsManager.js:null in handleException
at node_modules\react-native\Libraries\Core\ReactFiberErrorDialog.js:null in showErrorDialog
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in logCapturedError
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in update.callback
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in callCallback
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitUpdateQueue
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitLayoutEffectOnFiber
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitLayoutMountEffects_complete
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitLayoutEffects_begin
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitLayoutEffects
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitRootImpl
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in commitRoot
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in performSyncWorkOnRoot
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in flushSyncCallbacks
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in flushSyncCallbacksOnlyInLegacyMode
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in scheduleUpdateOnFiber
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in updateContainer
at node_modules\react-native\Libraries\Renderer\implementations\ReactNativeRenderer-dev.js:null in render
at node_modules\react-native\Libraries\ReactNative\renderApplication.js:null in renderApplication
at node_modules\react-native\Libraries\ReactNative\AppRegistry.js:null in runnables.appKey.run
at node_modules\react-native\Libraries\ReactNative\AppRegistry.js:null in runApplication
at node_modules\react-native\Libraries\BatchedBridge\MessageQueue.js:null in __callFunction
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 callFunctionReturnFlushedQueue