Replication Error - broken pipe

TrueNAS General
1

I am trying to backup my truenas pool to a second pool and got this error.

[EFAULT] cannot unmount ‘/var/db/system/samba4’: pool or dataset is busy Broken pipe.

What do I do with this?

2

Here is another one

[EFAULT] Passive side: cannot send ‘tank’: I/O error Active side: cannot unmount ‘/var/db/system/netdata-ae32c386e13840b2bf9c0083275e7941’: pool or dataset is busy.