dfu / spray-service data copy failure

8.8.0-rc6. DFU copy job failed with error:
Failed: 127.0.0.1: connection failed Target: T>172.20.226.176:7300, Raised in: jsocket.cpp, line 1361

I've attached the logs from kubectl for dfuserver and spray-service, and confirmed nothing was in the debug storage plane from this failure. Please let me know if you need anything else for this investigation.