ERRORS in log

Hi.

2017-10-10 07:28:49.797 [ERROR] [e.internal.WriterInterceptorExecutor] - MessageBodyWriter not found for media type=text/event-stream, type=class org.glassfish.jersey.media.sse.OutboundEvent, genericType=class org.glassfish.jersey.media.sse.OutboundEvent.

I have the latest OH2 installation.
These errors keep logging in my openhab.log file. They appear only when I open ClassicUI or HABPanel from a browser (Chrome).

Is there a setting I can adjust to prevent these? I also often get an “offline” message in the browser, that clears after refreshing the page.

Thank you!

Maybe you could ask here if they have solved the problem: