Failed to handle PublishMessage [requestId=4, acknowledge=false, excludeMe=true, discloseMe=false, retain=false, topic=clientToServerService.listener, exclude=null, eligible=null, arguments=[8, 9], argumentsKw=null] to org.springframework.messaging.support.ExecutorSubscribableChannel$SendTask@6dcf202d in ch.rasc.wamp2spring.pubsub.PubSubMessageHandler@18b45500, failedMessage=PublishMessage [requestId=4, acknowledge=false, excludeMe=true, discloseMe=false, retain=false, topic=clientToServerService.listener, exclude=null, eligible=null, arguments=[8, 9], argumentsKw=null]