Loosing my connection in a JWTB sandbox server multiple times

I keep losing my connection in my favorite Garry’s mod sandbox server called JWTB, and I don’t know why I keep losing connection. whenever I am about to lose connection the server freezes for me and then a couple of seconds I am about to be auto disconnected. Here is an image of me about to be disconnected

so help me please (the picture I had taken wasn’t a server crash)