TIme machine buck up error with VM fusion

I got a Time machine error message this morning.

I searched for many website,
but I couldn’t understand.

but

I found some hints about this problem.
It’s mean
I wonder if the VM fusion may relate the time machine error?

and

mention
“After about 10 GB or more of data is backed up to an external disk, Time Machine may stop backing up. “

soon after I read,
I checked it.

The file of
Documents/Virtual Machines
is more than 11GB.

I tried to eliminate this folder from Time machine,
it worked well!

S/N BRAND