This error has started showing up more frequently when I attempt to go to the admin page for my redmine jumpbox:
Oops! There's been a problem with the JumpBox
503 Internal Server Error: Bad Gateway
You made a request that this server was unable to handle due to an internal problem, specifically an inability to contact an internal application server. You can try again in a few seconds.
Rebooting the vm from the vmware console does the trick but I'm finding that this jumpbox server requires reboots at a frequency that rivals a Windows 95 box...