I'm attempting to access my orchestrator appliance home page at

http://OrchestratorIPaddress

and getting this error:

This error (HTTP 500 Internal Server Error) means that the website you are visiting had a server problem which prevented the webpage from displaying.

For more information about HTTP errors, see Help.

But the Orchestrator Configuration Page at https://OrchestratorIPAddress:8283

and the appliance configuration page at https://OrchestratorIPAddress:5480

Both work fine.  Why would configuration pages work fine but home page return a 500 error?

Thanks!