This is actually not a bug or problem but misconfigured root tweak settings are causing the issue.
Issue: WHMSonic resellers see a blank white page when they enter to their WHMSonic panel on 2086/whm. Reason: Under the root WHM >> Tweak Settings >> Security >> “Allow PHP to be run by resellers in WHM” option is disabled. Solution: Login to WHM root >> Tweak Settings >> Security >> enable this option “Allow PHP to be run by resellers in WHM” then save the page.
Server Requirements:Dedicated or VPSControl Panel: WHM/cPanelFirewall Configuration: If you have...
http://whmsonic.com/videos/whmsonic/setup/index.html
1.) Please disable "security token require" option via WHM root >> Tweak Settings. Under...