FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:installDebug'. >
com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: Failed to establish session * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output
Could not install the app on the device, read the error above for details.Make sure you have an emulator running or a device connected and haveset up your Android development environment:解决⽅法
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