After launching the ImportOSLayer ps script, the vm reboots but, after 20 minutes, on the ELM, we found the generic error "The Compositing Engine failed to initialize after '00:20:00'."

AL currently doesn't support NVMe controllers in Azure
We should make sure the machine isn't configured with an NVMe disk controller for the boot disk. This will cause the CE to fail to boot.
It will be supported in App Layering in the next release, which is after 2507
After launching the ImportOSLayer ps script, the VM reboots but after 20 minutes, on the ELM, we found the generic error "The Compositing Engine failed to initialize after '00:20:00'."