Flutter can’t start the error program when running it, so how to solve it

Flutter assets will be downloaded from https:// storage.flutter-io.cn.Make sure you trust this source!Launching lib\main.dart on XXXXXX  in debug mode. . .

FAILURE:Build failed with an exception.

* What went wrong:
Execution failed for task ' :app: packageDebug'.
> Sevaral variant outputs are configured to use the same file name "resources-debug.ap_", filters : SINGLE:SINGLE

* 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 32s
Exception: Gradle task assembleDebug failed with exit code 1Exited (sigterm)

Solution:
Run: flutter clean

OK!!!