grpc._channel._MultiThreadedRendezvous: <_MultiThreadedRendezvous of RPC that terminated with:

[nomaad42]

I've got the following error, can you please tell me what is happening here?
Seems like, this problem is on the client side

grpc._channel._MultiThreadedRendezvous: <_MultiThreadedRendezvous of RPC that terminated with:
status = StatusCode.UNKNOWN
details = "Exception iterating requests!"
debug_error_string = "None"

[sandrisj]

I have the same issue. Any ideas what could be the reason?