lxc container proxmox 5.2 error problem

I have upgraded a production server from 5.1 to 5.2 on yesterday. I had 7 active containers. after the upgrade and reboot kernel changed from 4.15.3-1 to 4.15.17-1 Since then I couldn't start 6 of my 7 containers. Survived one was on first drive local-zfs. 6 failed containers were on the second...