Android Studio compiled Aidl, class not found

Apply plugin: ' Com.android.application '

Android {
Compilesdkversion 26
Buildtoolsversion "26.0.0"
Defaultconfig {
ApplicationID "Com.tinywsn.myapplication"
Minsdkversion 15
Targetsdkversion 26
Versioncode 1
Versionname "1.0"
Testinstrumentationrunner "Android.support.test.runner.AndroidJUnitRunner"
}
Buildtypes {
Release {
Minifyenabled false
Proguardfiles getdefaultproguardfile (' proguard-android.txt '), ' Proguard-rules.pro '
}

}
sourcesets {
Main {
Java.srcdirs = [' Src/main/java ', ' src/main/aidl ']
Aidl.srcdirs = [' Src/main/aidl ']
}
}

}

dependencies {
Implementation Filetree (dir: ' Libs ', include: [' *.jar '])
Androidtestimplementation (' com.android.support.test.espresso:espresso-core:3.0.1 ', {
Exclude group: ' Com.android.support ', module: ' Support-annotations '
})
Implementation ' com.android.support:appcompat-v7:26.0.2 '
Testimplementation ' junit:junit:4.12 '
Implementation ' com.android.support.constraint:constraint-layout:1.0.2 '
}

Android Studio compiled Aidl, class not found