I have a customer that has twice in the past six months had an issue where Fabricpool files stopped getting served. They are visible but not available.
Messages indicate an issue to the storage grid.
Message: object.store.unavailable: Unable to connect to the object store "SGFabricPool" from node 3bd646cf-4fcd-11ec-b7c6-d039ea20b454. Reason: Connection unavailable
Rebooting the gateways fixes the issue.