android studio. The application cannot be assembled. Gradle what to do?

Question

gradle

what to do with Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources]
and everything that it produces
Information:Gradle tasks [:app:generateDebugSources, :app:generateDebugAndroidTestSources]
:app:preBuild UP-TO-DATE
:app :preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72220Library
:app:prepareComAndroidSupportSupportV42220Library
:app:prepareDebugDependencies
:app:compileDebugAidl
:app:compileDebugRenderscript bug
:app:
generate TO-DATE
:app:mergeDebugAssets
:app:generateDebugResValues
:app:generateDebugResources
:app:mergeDebugResources
:app:processDebugManifest
:app:processDebugResources
:app:generateDebugSources
:app:preDebugAndroidTestBuild UP-TO-DATE
:app:prepareDebugAndroidTestDependencies
:app:compileDebugAndroidTestAidl
:app:processDebugAndroidTestManifest
:app
:
compileDebugAndroidTest app:generateDebugAndroidTestAssets UP-TO-DATE
:app:mergeDebugAndroidTestAssets
:app:generateDebugAndroidTestResValues
​​:app:generateDebugAndroidTestResources
:app:mergeDebugAndroidTestResources
:app:processDebugAndroidTestResources
:app:generateDebugAndroidTestSources
Information:BUILD SUCCESSFUL
Information:Total time: 36.114 secs
Information:0 errors
Information:0 warnings
Information:See complete output in console
I've been looking for an answer to my question for 2 hours now, but I couldn't do anything. and what is it all about.