Information:Gradle tasks [clean, :LRecyclerview_library:generateDebugSources, :LRecyclerview_library:generateDebugAndroidTestSources, :LRecyclerview_library:mockableAndroidJar, :LRecyclerview_library:prepareDebugUnitTestDependencies, :app:generateDebugSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:generateDebugAndroidTestSources, :sweet-alert-dialog-library:generateDebugSources, :sweet-alert-dialog-library:generateDebugAndroidTestSources, :sweet-alert-dialog-library:mockableAndroidJar, :sweet-alert-dialog-library:prepareDebugUnitTestDependencies, :universalimageloader:generateDebugSources, :universalimageloader:mockableAndroidJar, :universalimageloader:prepareDebugUnitTestDependencies, :universalimageloader:generateDebugAndroidTestSources]
Error:java.lang.NullPointerException (no error message)
Information:BUILD FAILED
Information:Total time: 3.638 secs
Information:1 error
Information:0 warnings
Information:See complete output in console
我在Clean Project的时候报的错
我在运行项目时报的错
我也不知道是什么原因 知道的请告知一下，非常感谢
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Please refer to:
https://github.com/anggrayudi...
NullPointerException
From your error message, analyze that you are missing a jar package or project reference during compilation