Generated class not found on dexpathlist , Android Studio 3.0

[sprengerst]

Hello I refered to the Migration Guide of Android Studio 3.0 in my Project. https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration.html
But now I get a ClassNotFound on the generated Provider-Classes and a warning that it can't be found on the DexPathList althought it compiles with:

annotationProcessor 'net.simonvt.schematic:schematic-compiler:0.7.0'
compile 'net.simonvt.schematic:schematic:0.7.0'

Is this 3.0 migration a known issue or should I give a code example on my Build Configurations?

EDIT:
java.lang.RuntimeException: Unable to get provider inc.together.module.database.provider.EventMemberRequestUserProvider: java.lang.ClassNotFoundException: Didn't find class "inc.together.module.database.provider.EventMemberRequestUserProvider" on path: DexPathList[[....]]

[sprengerst]

Sorry it was a problem with my integration:

I used implementation instead of api on the library that used the schematic lib and I accidently had apt applied on the top of my gradle file.