Reboot on WAP boot

[CloudHoppingFlowerChild]

I'm running OPNsense 20.1.7 under ESXi 6.7.0 Update 2 and I'm using a Ubiquity UniFi AP AC LR wireless access point. When the access point comes online, something like 90 seconds after either after being plugged in or rebooting it, the router crashes and reboots. It works fine for weeks at a time otherwise. I suspect it's the influx of clients (10-15 wireless), possibly the DHCP requests (only a guess) that causes the problem.

I captured the initial error that displays on the console only once out of half a dozen tries

Here is a capture of the console during the crash/reboot
https://youtu.be/rFsSlnSVIDc
Though I doubt it would be of much use since VNC is updating at only 30FPS; probably at least a page of missing info between frames.

Nothing under System > Log Files looks even vaguely pertinent. The Web GUI does not prompt to submit a report after these reboots occur.