this error indicates that a ZFS pool cannot be imported because it was last accessed by another system, and the host IDs do not match.
Your problem is much more than not being able to access SMB, you cannot access the pool at all if the error is correct.
Even if you had a complete computer failure, using a TrueNAS configuration backup should have restored the pool.
Provide the data you can from Joes Rules for the Drive Failures section. Also provide the results from zpool import as I feel this may be the item we are facing.