Halp Plz

It looks like im involved in a pretty big problem, I can access some servers on my list, while I can’t on others, like PCB.
When I try to join it says this thing: io.netty.handler.timeout.readtimeoutexception and a bit more shit. Does anyone know how to help me? I tried some stuff I found on Youtube, didn’t help at all. Thanks for the help ;/

Nevermind found (after hours of research) a solution, sorry for the post.