Could someone fix this SNPC?

Hello there. I know nothing of making SNPC’s, but i wanted to use Dan’s Fast Zombie npc to learn more about making npc’s, and maybe make some of my own. The problem is that is is completeley broken in gmod 13.

It has a bunch of errors, including timers, the Isself variable, the Capabilities line and a few more.

Could someone be kind enough to fix this npc?:

Thank you so much for your time! Ill try to provide as much help as i can with errors and such.

This is retarded, you’re not going to learn shit from someone fixing someone else’s code.

Do this yourself and come back when you have problems.