Hello,
I was using copy of master branch on Ubuntu, Google Chrome where I encountered a bug on "Status -> Monitor" page.
When I click on Monitor page, after a few seconds Javascript warning comes at the bottom regarding a "A fatal error encountered...." and none of 
the live charts are shown. Everything works fine on Firefox.
Can anyone confirm it or its just a local issue on my system. I fixed it on my machine. Please confirm it so that we can make it open and I can make a pull request.
 
Regards, 
Ashutosh Dhundhara