Garry's Mod Server Error

[LolitsWills]

I keep getting this error but no clue what to do as what I've been doing isn't working.
[ERROR] A runtime error has occurred in "gamemodes/darkrp/gamemode/cl_init.lua" on line 54.
The best help I can give you is this:

Invalid DarkRP method stub! Field "parameters" is invalid!

Hints:
- No hints, sorry.

The responsibility for the error above lies with (the authors of) one (or more) of these files:
1. gamemodes/darkrp/gamemode/cl_init.lua on line 54
------- End of Simplerr error -------


[ERROR] A runtime error has occurred in "gamemodes/darkrp/gamemode/cl_init.lua" on line 54.
The best help I can give you is this:

Invalid DarkRP method stub! Field "parameters" is invalid!

Hints:
- No hints, sorry.

The responsibility for the error above lies with (the authors of) one (or more) of these files:
1. gamemodes/darkrp/gamemode/cl_init.lua on line 54
------- End of Simplerr error -------

1. error - [C]:-1
2. unknown - gamemodes/darkrp/gamemode/libraries/simplerr.lua:530
3. finish - gamemodes/darkrp/gamemode/libraries/interfaceloader.lua:163
4. unknown - gamemodes/darkrp/gamemode/cl_init.lua:54

Couldn't Load Init Script: 'darkrp/gamemode/cl_init.lua'