For a kernel panic to happen on mac hardware–seemingly without cause–is unknown to me.
The difficulty arises that this makes it a hardware issue rather than a MineOS (the webui software part), and I’m not all that good at debugging why hardware would panic/fail on any given hardware, much less Mac hardware.
Unfortunately, I can’t provide any meaningful troubleshooting routes (even after looking up that error, I find nothing pertinent).
One thing to keep in mind is that MineOS (the webui software part) runs on any Linux/BSD variants. Perhaps you can see if there are other distributions that run more smoothly on mac hardware, then install the web-ui atop your newly installed distribution using instructions from the MineOS wiki.