TypeError: Cannot read property 'publish' of null
at SdnVersionDispatcher.(anonymous function).(anonymous function) [as dispatch] (C:\Prognosis\Server\Configuration\microservices\sfbSDNReceiver\SdnVersionDispatcher
Hi Cory, we found the issue to be a problem with 11.4 when setting up a separate MON and MAN server, that the "messaging" folder in the monitoring node does not get installed in \prognosis\server\configuration.
To resolve this, we installed the lastest 11.4 patch to both MON and MAN server, then copied the messaging folder from the MAN server using the above path then restarting the service, after the 500 server errors disappeared and we saw SDN live traffic come through.
Apparently the folder contains keys to allow encrypted SDN traffic to flow between the MON and MAN server over port 5671 if you check netstat, this port may not have established connections between the MON and MAN server if its the same problem I experienced. This will be resolved after doing the above steps. Hope this helps.