Unsupported feature (s) vdev_zaps_v2, Cannot import rpool after upgrade

[aychprox]

Hi all,

Today trying to upgrade one node from pve-manager/8.3.5 to latest release.
Unfortunately the node unable to start due to zfs issue.

This pool uses the following feature(s) not supported by this system:​

com.klarasystems: vdev_zaps_v2​

cannot import 'rpool': unsupported version or feature​

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Not sure why after upgrade the ZFS still remain at 2.1.15-pve1 and zfs-kmod-2.1.14-pve1.
Need guide/steps on how to recover the system from this situation.....

Thanks in advance.