Failed to create MD5 hash for file 에러

Question

완성된 소스파일인데 

 

generate signed apk 누르면 

 

저렇게 에러가 뜨네요 ㅣ.. 쌩초보라 ..

 

어떻게 해결해야하죠 ? 

 

 

Error:Execution failed for task ':app:compileReleaseJavaWithJavac'.
> Failed to create MD5 hash for file 'C:\appl\BMoney(with+comment)\BMoney\app\libs\google-play-services.jar'.