Client Errors while glitching

I've been trying to glitch some maps and when i glitch them, i get a client error (i dont remember the number), on the glitching vids i saw, the people dont get client errors, so i want to know if there is any way to fix this, and avoid getting client errors when glitching

You might just have seen older videos where you could glitch in to more than you can now?

nope, i've seen some recent videos, 1 - 3 weeks ago