attempt to perform arithmetic on field 'StartTime' (a nil value)

Trying to get Climb setup and I am getting this everytime I press tab to open the scoreboard:


[ERROR] gamemodes/climb/gamemode/client/scoreboard.lua:26: attempt to perform arithmetic on field 'StartTime' (a nil value)
  1. unknown - gamemodes/climb/gamemode/client/scoreboard.lua:26


scoreboard.lua:

Not sure what is wrong.

LocalPlayer.StartTime isn’t declared when that function is called