Trying to fix an old addon from Gmod 12 [Need help]

[SkitZz]

So I'm trying to get this old scoreboard to work, i made back in gmod 12, but i keep getting this error whenever i press tab to open the scoreboard. What does it mean? I've been searching on google for the answer, but i couldn't find anything, so i thought I'd ask here instead.

[ERROR] gamemodes/darkrp/gamemode/modules/fadmin/fadmin/cl_interface/cl_scoreboard.lua:30: attempt to index upvalue 'pScoreBoard' (a nil value)
  1. unknown - gamemodes/darkrp/gamemode/modules/fadmin/fadmin/cl_interface/cl_scoreboard.lua:30


[ERROR] gamemodes/darkrp/gamemode/modules/fadmin/fadmin/cl_interface/cl_scoreboard.lua:41: attempt to index upvalue 'pScoreBoard' (a nil value)
  1. unknown - gamemodes/darkrp/gamemode/modules/fadmin/fadmin/cl_interface/cl_scoreboard.lua:41

 

Any help is appreciated.

Edit: Never mind, found out why.