Scheduled snapshot errors

Some of my snapshots are failing, & I need to troubleshoot them, but the error message doesn’t give me any details. How do I proceed?

Screenshot:
https://imgur.com/RFX9Pz9

Does /opt/rockstor/var/log/* or /var/log/* give you any help?

have you clicked on “error” in the Last run column? There should be more information there. + also what @roweryan said should help.

Clicking it doesn’t yield anything useful:

https://imgur.com/mpoYaaq

It does, but I can’t make any sense of it- maybe someone who understands it can advise as to how I should proceed.

Screenshot:

https://imgur.com/TjWmnZt