@Hubert Dudek​ 

Error during OpenSession; Request: TOpenSessionReq(client_protocol=5, username=None, password=None, configuration=None) Error: None Bounded-Retry-Delay: None Attempt: 1/30 Elapsed-Seconds: 1.3954582214355469/900.0
OperationalError: ('', EOFError())

I get the following error when I try to execute the code above. Do you know something about this?