Have you seen this thread?
https://forum.45homelab.com/t/zfs-write-errors-with-hl15-full-build-and-sas-drives/827
It’s a long thread, but the bottom line is there appears to be issues for some people with the 45Drives supplied SFF-8643/SFF-8643 cables and the onboard HBA when the SAS drives are operating at 12 gbps.