Cbbackup stops when backing up

Hi All,

I am going to back up the couchbase, but the procedure stops on some where. There are two buckets need to be backed up.

I am okay with bucket A, which is 100mb. While bucket B has 500GB data in it, and it stops before 2%.

The back up happens on a single node.

Does anyone know the result?

Couchbase Server is community version 4.0

Many thanks.