proxmox | time out waiting for device

Hello Experts,

I am new to Proxmox,
I have newly built a proxmox version 8.

After creating a directory, I did reboot that machine and I encountered below error.

"Timed out waiting for device"
"Dependency failed for mnt-pve-backup"

Disk Capacity : 1.8 TiB
Disk : NVME

also, I checked my /etc/fstab there is nothing that I added in there.

Thanks in advance.

Regards,