Receiving an error when querying services endpoint.

[minhajttl1]

Getting following error while executing querying command from README.md "gRPC CLI" sectoin.

`grpc_cli ls opi-security-server:50051 grpc.reflection.v1alpha.ServerReflection opi_api.security.v1.IPsec


Received an error when querying services endpoint.
ServerReflectionInfo rpc failed. Error code: 14, message: failed to connect to all addresses; last error: UNKNOWN: ipv4:192.168.200.3:50051: Failed to connect to remote host: Connection refused, debug info: UNKNOWN:failed to connect to all addresses; last error: UNKNOWN: ipv4:192.168.200.3:50051: Failed to connect to remote host: Connection refused {grpc_status:14, created_time:"2023-12-22T06:08:58.594670505+00:00", file_line:153, file:"src/core/lib/transport/error_utils.cc"}
`