Lxc copy to remote of different (higher) version

Hmm, I’m getting:

[root@shl1 lxd]# lxc export git-http git-http.tgz -vvv
Error: Create backup: Backup storage: Could not create snapshot LV named snapshot--05236fd3--6b5f--4499--b074--7ae20cfb9d88

The reason I’m trying to backup containers is because I’m in the below situation. My sense is the above error might be related?..

Do you this I should reboot the host to recover state?

Many thanks,

Simon