Unable to send message to knative channel

[kameshsampath]

Platform: minikube
kamel: master

When deploying route that sends data to a knative channel like:

from("amqp:queue:examples")
                .streamCaching()
                .log(LoggingLevel.INFO, "Object FQN ${header.objectFQN} Split Size: ${header.CamelSplitSize}")
                .aggregate(header("objectFQN"), this::listAggregate)
                .eagerCheckCompletion()
                .completion(exchange -> exchange.getIn().getHeader("CamelSplitSize") != null
                        && exchange.getIn().getHeader("CamelSplitSize", Long.class) > 0)
                .completionTimeout(7000)
                .process(exchange -> {
                    List<String> words = exchange.getIn().getBody(List.class);
                    words.sort(String::compareToIgnoreCase);
                    exchange.getIn().setBody( String.join(",",words).getBytes());

                })
                .log("Sending Body: ${body}")
                .to("knative:channel/sortucase")
                .end();

the message send fails with error

https://gist.github.com/kameshsampath/ea9c8b355bc82110d3d70b1a718598e5

[kameshsampath]

It was bug with CoreDNS on kubernetes v1.11.0 on minikube., it got resolved upgrading minikube to v1.12.0.

Ref: knative/serving#3067