DARKRP i have an error i dont know how to solve

[ERROR] lua/autorun/client/holster.lua:808: Tried to use a NULL entity!
1. SetNoDraw - [C]:-1
2. fn - lua/autorun/client/holster.lua:808
3. unknown - lua/ulib/shared/hook.lua:109

This cant help us if we dont know which addons you're using and what you did until this happened.
Maybe it's the last addon you've installed or it's anotherone which you've edited and the viewmodel or something fucked it up cause a missing symbol.

Try "lua_log_sv 1" at startup (server.cfg?) and post the whole log over here. Maybe this gives us more information about your situation.

It also could help if you name us the (custom?) gamemode.

Else you could show since when this happens and which addons you've installed there and than tell us more about it.
It also could be a bad coded addon which got a simple bug.


Btw. google search gives some examples too! Maybe you'll get a sense where the failure could happen. Take a look at this:
https://github.com/Facepunch/garrysmod-i...issues/304

Cheers


EDIT:
I'm a failure. It's DarkRP. Lol. Customized the core files or something like this instead of DarkRP Modification ?