Recently I started encountering a GPF in UEFI on at least 2 Dell R720s with BIOS 2.9.0:

I'm trying to boot a Proxmox on a Samsung SSD 950 PRO NVMe drive using this Sabrent adapter: https://www.amazon.com/gp/product/B084GDY2PW.
This was working for quite some time and randomly failed on my existing server today. It's also failing the same way on another R720 that wasn't being used until today. This stack trace happens both when attempting to boot from the NVMe and when doing simple things like "Print all UEFI boot options to log". I'm trying Clover 5157.