OS v7.3.1[stable] graphs not showing

http://192.168.0.1:8080/graphs/ when try to view the resources, queues and interfaces graphs, my page show it blanks.
Error.PNG
Another things when I try to show the single Interface/Queue/Resources graph it’s ok. Attachment is available.
ok.PNG
Is this OS bug? or what is the solution?

Have you found a solution on this?

Please use google chrome browser to view the graph. I have same issue and i changed browser and it works. It may be due to webfig update on HTML5.