XDCR replication from 4.0.0 to 4.5.1

I’m receiving the following error when replicating from community version 4.0.0 to 4.5.1. I haven’t seen any info out there on what might be causing it.

GenericSupervisor 2017-10-18T16:14:41.020Z [INFO] Received timeout error when checking pipeline health. topic=d2d2354ef0771e1d5d9fe3193d0c15df/oauth/oauth

Hi @kyle.m.stephenson,

This could be a bug. Do you have any additional log information? Do any documents get replicated at all? Are you sure that the correct port numbers are open on all nodes?

Finally, and this might be asking a lot, but do you think you could try a replication from 4.0 to another 4.0 cluster to see if that works? If so, that narrows down the issue.

It seems to be replicating the data but not sure on the 4.0.0 if I get the same error. Not sure I have time to replicate another 4.0.0 environment. I was just wondering if this error is causing problems other than the annoying messages every 2 minutes.