Hello dear friend, please check for any typos/formatting errors in the configuration file in init.lua or in the gamelib folder if I'm not mistaken. Errors in these files can cause connection issues even on localhost.If the server and the client are being run on the same machine, this usually isn't a problem.However, if the IP address field is empty, the client won't know where to send the data and won't be able to connect to the server. This will result in a connection failure.