I am unable to setup HA currently. 

I try to check the status after following the guide on web, it just turn out loading icon and not respond at all.

Through the developer tools, i can see that it is loading a HighAvailability.ec file.

And also it send a RequestType=CheckRequestAlive and the status code is 200. 

I have no idea what is missing. Is there anyone who can help me out here .