Hi,
I have confluence in VM and using tomcat, whenever I try turning on celibrative mode nothing gets saved.
I have done the basic check I do confirm:
Synchron port is 8091 max heap size 1GB, I tried restarting synchrony
When I click edit and click Update I get this error:

I am using Google Chrome and under developer tools -> network -> WS I do see status code 101 switching protocols. I tried websocket web browser test and it works fine.
I do see a lot of error in console:
Under respond header I see server as Microsoft IIS/10.0 (do I have to enable websocket in ISS?)
Any help will appreciate.
Regards,
Dipesh