Hi,
found the solution: I have to exclude a bad dependency from kafka:
compile( group: 'org.apache.kafka', name: 'kafka_2.11', version: '0.11.0.2' ) {
exclude group: 'org.scala-lang.modules', module: 'scala-parser-combinators_2.11'
}
Akka loads “scala-parser-combinators_2.12” that works with KAFKA, too.
Have a nice day
Martin