Failed to establish a connection to the test generation service

I installed JDK-11, and still get the same result.

Many thanks for try the JDK change @evaluser and thanks also to @I_have_same_problem for also confirming that you see the same problem. At the moment we are struggling to reproduce this in any of our environments, so we will add some additional logging (logging to a local file on the users machine, that is) for the next release to see if we can get any further clues. We really appreciate your perseverance with this!