Failed to connect to remote host: connect: Connection refused (61)

Tested version: 8.45, 8.30 Simple code: device = connect_device(device_ip, PORT) settings = device.stub("Settings") aaa = settings.get_system("screen_brightness") # <----

Error info:

<_InactiveRpcError of RPC that terminated with: status = StatusCode.UNAVAILABLE details = "failed to connect to all addresses; last error: UNKNOWN: ipv4:172.28.28.28:65000: Failed to connect to remote host: connect: Connection refused (61)" debug_error_string = "UNKNOWN:Error received from peer {created_time:"2025-08-12T11:07:53.664403+08:00", grpc_status:14, grpc_message:"failed to connect to all addresses; last error: UNKNOWN: ipv4:172.28.28.28:65000: Failed to connect to remote host: connect: Connection refused (61)"}"