backup – Time Machine (M1, MBP 2021) retains failing throughout drives: “Did not create quantity data from disk ‘missingURLForRemounting”


I have been stumped by a problem with my time machine. Roughly 6 months in the past all time machines backups stopped working throughout all HDDs I’ve:

  • Two separate NAS Time machines
  • Two separate exterior arduous drives

It follows the identical sample:
It connects to the HDD / NAS, collects all modifications, begins copying after which simply fails silently sooner or later.

Trying on the logs, one error retains popping up:

2023-07-03 12:08:31  Did not create quantity data from disk '<TMDisk: 0x11d01b800> '/System/Volumes/Knowledge/dwelling'', error: missingURLForRemounting
2023-07-03 12:08:38  com.apple.backupd.sandbox.xpc: connection invalid

Issues I’ve tried: ‘

  • Checked out all threads I may discover on-line
  • Deleted the TM backups and began them from scratch
  • Used Ethernet connection
  • Forestall MBP from sleep.
  • Excluded an increasing number of folders from the TM backups (no impact)

Does anybody have any concept what may trigger this?

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