Hi I am trying to write a test grpc client and service in python. When I use an insecure channel, everything works stably, but if I try to establish a tls connection, an error occurs. To write code and create a chain of certificates, I used this guide https://github.com/joekottke/python-grpc-ssl.How can I make this example work?
grpcio version : 1.51.1 python version 3.9.17

Error message
Code:
Message = <_InactiveRpcError
...