[WinError 10061] No connection could be made because the target machine actively refused it.

[EudaldJuvanteny]

Hello
I'm trying to run pipeline demo pipeline-upload.py using PyCharm in windows computer, and I get this error:
[WinError 10061] No connection could be made because the target machine actively refused it.

I found in stackoverflow people who had similar problems and it explains some solution https://stackoverflow.com/questions/12993276/errno-10061-no-connection-could-be-made-because-the-target-machine-actively-re
But is not working anyway. Did somebody already have the same problem?
Regards