"실행 오류" yarn start 실행후

r - reload the app

d - open developer menu

i - run on iOS

a - run on Android

info Opening the app on Android...

info JS server already running.

info Launching emulator...

info Installing the app...

> Task :gradle-plugin:compileKotlin UP-TO-DATE

> Task :gradle-plugin:compileJava NO-SOURCE

> Task :gradle-plugin:pluginDescriptors UP-TO-DATE

> Task :gradle-plugin:processResources UP-TO-DATE

> Task :gradle-plugin:classes UP-TO-DATE

> Task :gradle-plugin:jar UP-TO-DATE

> Task :gradle-plugin:inspectClassesForKotlinIC UP-TO-DATE

> Task :app:buildCodegenCLI SKIPPED

> Task :app:generateCodegenSchemaFromJavaScript SKIPPED

> Task :app:generateCodegenArtifactsFromSchema SKIPPED

> Task :app:generatePackageList

> Task :app:preBuild

> Task :app:preDebugBuild

> Task :app:compileDebugAidl NO-SOURCE

> Task :app:compileDebugRenderscript NO-SOURCE

> Task :app:generateDebugBuildConfig UP-TO-DATE

> Task :app:javaPreCompileDebug UP-TO-DATE

> Task :app:checkDebugAarMetadata UP-TO-DATE

> Task :app:generateDebugResValues UP-TO-DATE

> Task :app:mapDebugSourceSetPaths UP-TO-DATE

> Task :app:generateDebugResources UP-TO-DATE

> Task :app:mergeDebugResources UP-TO-DATE

> Task :app:createDebugCompatibleScreenManifests UP-TO-DATE

> Task :app:extractDeepLinksDebug UP-TO-DATE

> Task :app:processDebugMainManifest UP-TO-DATE

> Task :app:processDebugManifest UP-TO-DATE

> Task :app:processDebugManifestForPackage UP-TO-DATE

> Task :app:processDebugResources UP-TO-DATE

> Task :app:compileDebugJavaWithJavac UP-TO-DATE

> Task :app:mergeDebugShaders UP-TO-DATE

> Task :app:compileDebugShaders NO-SOURCE

> Task :app:generateDebugAssets UP-TO-DATE

> Task :app:mergeDebugAssets UP-TO-DATE

> Task :app:compressDebugAssets UP-TO-DATE

> Task :app:processDebugJavaRes NO-SOURCE

> Task :app:mergeDebugJavaResource UP-TO-DATE

> Task :app:checkDebugDuplicateClasses UP-TO-DATE

> Task :app:desugarDebugFileDependencies UP-TO-DATE

> Task :app:mergeExtDexDebug UP-TO-DATE

> Task :app:mergeLibDexDebug UP-TO-DATE

> Task :app:dexBuilderDebug UP-TO-DATE

> Task :app:mergeProjectDexDebug UP-TO-DATE

> Task :app:mergeDebugJniLibFolders UP-TO-DATE

> Task :app:mergeDebugNativeLibs UP-TO-DATE

> Task :app:stripDebugDebugSymbols UP-TO-DATE

> Task :app:validateSigningDebug UP-TO-DATE

> Task :app:writeDebugAppMetadata UP-TO-DATE

> Task :app:writeDebugSigningConfigVersions UP-TO-DATE

> Task :app:packageDebug UP-TO-DATE

> Task :app:createDebugApkListingFileRedirect UP-TO-DATE

> Task :app:installDebug FAILED

38 actionable tasks: 2 executed, 36 up-to-date

info 💡 Tip: Make sure that you have set up your development environment correctly, by running react-native doctor. To read more about doctor command visit: https://github.com/react-native-community/cli/blob/main/packages/cli-doctor/README.md#doctor

FAILURE: Build failed with an exception.

* What went wrong:

Execution failed for task ':app:installDebug'.

> com.android.builder.testing.api.DeviceException: No connected devices!

* Try:

> Run with --stacktrace option to get the stack trace.

> Run with --info or --debug option to get more log output.

> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 5s

info Run CLI with --verbose flag for more details.|
후 실행이 안됩니다..

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