Hi, We just experienced this again, I will attempt to fill in the information you requested.
2022-02-08T06:43:51+01:00: re-sync snapshot "vm/212/2022-02-02T06:00:02Z" done
2022-02-08T06:43:51+01:00: percentage done: 80.88% (14/18 groups, 157/281 snapshots in group #15)
2022-02-08T06:43:51+01:00: sync snapshot "vm/212/2022-02-02T07:00:02Z"
2022-02-08T06:43:51+01:00: sync archive qemu-server.conf.blob
2022-02-08T06:43:51+01:00: sync archive drive-scsi3.img.fidx
2022-02-08T07:28:51+01:00: downloaded 102502791 bytes (0.04 MiB/s)
2022-02-08T07:28:51+01:00: sync archive drive-scsi2.img.fidx
2022-02-08T12:57:28+01:00: downloaded 6699457660 bytes (0.32 MiB/s)
2022-02-08T12:57:28+01:00: sync archive drive-scsi0.img.fidx
2022-02-08T13:37:32+01:00: downloaded 5735962934 bytes (2.28 MiB/s)
2022-02-08T13:37:32+01:00: sync archive drive-efidisk0.img.fidx
2022-02-08T13:37:32+01:00: downloaded 0 bytes (0.00 MiB/s)
2022-02-08T13:37:32+01:00: got backup log file "client.log.blob"
2022-02-08T13:37:32+01:00: sync snapshot "vm/212/2022-02-02T07:00:02Z" done
2022-02-08T13:37:32+01:00: percentage done: 80.90% (14/18 groups, 158/281 snapshots in group #15)
2022-02-08T13:37:35+01:00: sync group vm/212 failed - permission check failed.
2022-02-08T13:37:38+01:00: sync group vm/400 failed - authentication failed - invalid ticket - expired
2022-02-08T13:37:42+01:00: sync group vm/801 failed - authentication failed - invalid ticket - expired
2022-02-08T13:37:45+01:00: sync group vm/901 failed - authentication failed - invalid ticket - expired
2022-02-08T13:37:45+01:00: TASK ERROR: sync failed with some errors.