Time machine unable to backup my mac after Monterey beta 3

Dear all Developers,

I update my mac to macOS 12 beta 3 a week ago, and I tried to backup my mac in these days. However, the time machine always pops out an error showing in the attachment. I attempted to solve it according to the following instructions, yet, it does not work.

https://softwaretested.com/mac/time-machine-snapshot-could-not-be-created-for-the-disk-error/#What_is_Disk_in_Time_Machine

The only way to solve it is to backup my mac in safe mode. However, it is very time-consuming and not a realistic solution.

Sincerely,

hawkiyc

Have you tried to create a new backup versus using a previous backup? Often when I run into a TM backup issue its usually after an OS upgrade. I've usually solved this by creating a new backup. From that point, updates thereafter work without a problem

Time machine unable to backup my mac after Monterey beta 3
 
 
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