Someone linked me this thread because I’m having the same issue.
From what I’ve read this Xen issue can be patched but you have to build your own Qubes OS ISO and update Xen to version 4.14.1 where this bug has been patched.
Also it appears that this patch may cause other issues in other architectures so it won’t be included in Qubes 4.1 which mean we’ll have to wait a long time if we want the devs to fix it for us.
trying-to-install-to-intel-nuc
Xen BUG
Qubes OS buildind issues