Gmod server not working

So basically i’m trying to run a basic Gmod server (Start new game> 2 Players), not the SRCDS version. It worked all the time so far for me, and people would connect to my server by getting in my Hamachi network, and then typing “connect (my hamachi IP)” in the console. Right now, I just realised that Gmod recently upgraded a lot of stuff, and this doesn’t work anymore, my friend can’t connect to it in no way but I manage to run it. There’s no error appearing in the console, I don’t know what could be the problem, any help on this?