Periodic snapshot task suddenly not working

I’ve been using this snapshot setup for about 2 years now, and until recently, it was working fine.
However this morning i noticed that all snapshots stopped at 7th January. After that there is no new snapshots, and they’re all in PENDING state.

I’ve not renamed them or changed config - so where would I look for clues?
I did have a power outage and needed server BIOS resetting on 7th January !

I looked in zettarepl.log but that seems to be log for replication tasks rather than snapshots. Where would I look next?

I just noticed that zfs history stops directly after I powered up my server after the power outage… and for some reason, some of the logs claim it was 2025-07-02 rather than 2025-02-07. Could it be connected to the power outage and me having to reset the BIOS?

2025-01-07.00:00:00 zfs snapshot -r tank/work@D-2WK-2025-01-07_00-00
2025-01-07.00:00:00 zfs snapshot -r tank/laptop_backups@daily-2025-01-07_00-00
2025-01-07.20:54:35 zpool import 14980805880594726473 tank
2025-01-07.20:54:35 zpool set cachefile=/data/zfs/zpool.cache tank
2025-07-02.00:20:45 zpool import 14980805880594726473 tank
2025-07-02.00:20:45 zpool set cachefile=/data/zfs/zpool.cache tank
2025-07-02.00:32:06 zpool import 14980805880594726473 tank
2025-07-02.00:32:06 zpool set cachefile=/data/zfs/zpool.cache tank
2025-07-02.00:43:10 zpool import 14980805880594726473 tank
2025-07-02.00:43:10 zpool set cachefile=/data/zfs/zpool.cache tank
2025-01-13.08:45:05 zfs destroy tank/Media@weekly-2024-12-13_02-00
2025-01-13.08:45:06 zfs destroy tank/laptop_backups@daily-2024-12-24_00-00,daily-2024-12-25_00-00,daily-2024-12-26_00-00,daily-2024-12-27_00-00,daily-2024-12-28_00-00,daily-2024-12-29_00-00,daily-2024-12-30_00-00