Solutions
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GovernorBlaze's post in Unable to access WebUI - 6.11.5 was marked as the answerWas able to get this one sorted, not sure exactly why but it was a network config error.
I deleted /config/network.cfg on the flash drive and restarted and I was able to access the GUI again on the server.
I didn't have any VLANs configured that is causing some of the issues on 6.12