Pool is ONLINE but UNHEALTHY

I am using a FREENAS-MINI-XL with 8 (20TB) disks. We have two (2) pools with pool1 having 2 disks and pool2 having 6 disks (each pool mirrored).
Both pools are used as a Storage Domain in our Oracle Linux Virtualization Manager (Ovirt) platform. Whiles making a file copy of one of the VMs, the error ONLINE (Unhealthy) (X) appears on the dashboard. I ran zpool status -v pool1 command and this the result:
scan: scrub in progress since Sun Oct 27 13:38:52 2024
1.36T scanned at 668M/s, 382G issued at 184M/s, 3.72T total
0B repaired, 10.03% done, 05:18:24 to go
config:

    NAME                                            STATE     READ WRITE CKSUM
    dc1cls1-truenas1-pool1                          ONLINE       0     0 0
      mirror-0                                      ONLINE       0     0 0
        gptid/818f811c-4732-11ed-a83b-b4969102e2fc  ONLINE       0     068
        gptid/815e5428-4732-11ed-a83b-b4969102e2fc  ONLINE       0     068

errors: Permanent errors have been detected in the following files:

The listed file happens to be the very one I was making a copy of using rsync. The related VM hanged and was paused. I was forced to restart all the servers including the TrueNAS. I also started a SCRUB on pool1. What is the next step to take??? I am new to handling this kind of error.