TASK ERROR: storage ‘xxx’ does not exists

https://forum.proxmox.com/threads/task-error-storage-data01-does-not-exists.62955

if the storage xxx does not exist, and you just want to get rid of the CT/VM, do the following:

rm /etc/pve/lxc/CTID.conf (if container) or rm /etc/pve/qemu-server/VMID.conf (if vm), where CTID and VMID are the ID of your guest.

afterwards: pct rescan && qm rescan to rescan the disks

NOTE: be sure that you don’t need any of these guests later, because without the disk and the config file (or a valid backup) it will be impossible to restore