Camel - Route Diagram not working with Camel K integration

[tadayosi]

Originally reported at apache/camel-k/issues/4990.

The Route Diagram view shows blank with the error stacktrace in the browser console.

It only happens with a Camel K route deployed on a K8s/OpenShift cluster. The same route can show the route diagram locally with camel run command.

It's still likely an issue with Camel K and not with Hawtio Online, but filed here for record.