I used EnergyPlusToFMU to create FMUs for the example files that comes with it. I'm using PyFMI to run the simulation. Every time I get the following error ExternalInterface: Could not open socket. File descriptor = -1. The utilSocket.log file shows that sockets are being opened but errors occur when trying to connect to them. Socket opened, sockfd = 348. Error when connecting to socket: WSAGetLastError = 10013.