HC is not showing disk/bandwidth usage graph.

Question: HC is not showing disk/bandwidth usage graph. 

Answer:
If you  go to Reports :: Disk Usage or Bandwidth Usage :: Usage Graph, you may find a broken link showing no graph.

To fix this issue access the web server machine and go to HC installation folder path:

X:\program files\advanced communications\HostingController There you will find a folder "Temp". Give Everyone user full permission on it.

Now graph will start displaying in the panel