react-native-webview:clean :Unable to delete directory

react-native

cd android.\gradlew clean

error message:

Execution failed for task ':react-native-webview:clean'.> Unable to delete directory 'C:****\node_modules\react-native-webview\android\build'    Failed to delete some children. This might happen because a process has files open or has its working directory set in the target directory.    - C:****\node_modules\react-native-webview\android\build\intermediates\library_java_res\debug\res.jar