how to fix zpool status errors of snapshots

[Runningman-work]

I am using proxmox 8.1.4 and have PBS running in a LXC-container. lately the disks were having issues, I saw checksum errors. after "zpool scrub" and "zpool clear" the checksum errors are gone (for now) but the pool has errors:

root@pu-pve-pbs:~# zpool status -v
  pool: pool-hdd16k
 state: ONLINE
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-8A
  scan: scrub repaired 0B in 09:19:31 with 2 errors on Mon Mar 11 17:23:02 2024
config:

        NAME                                    STATE     READ WRITE CKSUM
        pool-hdd16k                             ONLINE       0     0     0
          raidz1-0                              ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_2GG4YZKD  ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_2GG1YGSF  ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_2GGA8NZD  ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_2GGA8JYD  ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_2GG378JD  ONLINE       0     0     0
            ata-WDC_WD221KFGX-68B9KN0_3ZH3781Z  ONLINE       0     0     0
 
errors: Permanent errors have been detected in the following files:

        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_hourly-2024-03-12-0217:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_daily-2024-02-15-0525:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_hourly-2024-03-10-2217:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_weekly-2024-03-10-0547:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_daily-2024-02-14-0525:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        pool-hdd16k/backup/subvol-100-disk-0@zfs-auto-snap_daily-2024-03-07-0525:/backup/.chunks/6bba/6bbab3a2b92ed294819c0b6e583014de7d248e6592f0f4686f4b62f41eac0b9f
        [...]

Are the pool errors coming from the checksum errors ? How can I fix them ?