Cannot see cameras

I integrated GitHub with my Samsung Account and installed the Protect SmartApp as well as the Protect Camera for the Device Handler. Entered creds on the Samsung App but I cannot see my devices. When I run simulation for the Protect SmartApp there is an error:  java.lang.NullPointerException: Cannot invoke method _getApiKey() on null object @line 200 (nvr_cameraPoll)

Any ideas? 