@Pilow
Yes, I enabled this option.

Hi everyone,
I'm trying run a VM into another vm, The application mount network laboratories similar the EVE-NG.
The VM that host the application work I released nested virtualization. When I try to run a QEMU image, this realizes that it doesn't boot.
In the other envioriment, where it is used the Proxmox, doesn't repend this error.
What I need to do for run the images QEMU?
I use the XCP-NG 8.3.
Thank who can to help-me.