time machine fails to back up. error message reads “/private/var/audit/20220430140425.crash_recovery” could not be backed up.

ritaleung70 wrote:

time machine fails to back up. error message reads “/private/var/audit/20220430140425.crash_recovery” could not be backed up.

what shall i do?

Try a different external drive and compare you results.

If the drive is failing replace it...

you can try salvaging the drive with issues:

Erase and reformat a storage device in Disk Utility on Mac

Erase and reformat a storage device in Disk Utility on Mac - Apple Support

All drives will fail in due time—

3-2-1 Backup Strategy: three copies of your data, two different methods, and one offsite.