I can't pick arrow. Console says

[JoJo's Stand System] lua/autorun/stand_system.lua:55: bad argument #1 to 'SetActiveWeapon' (Entity expected, got string)
1. SetActiveWeapon - [C]:-1
2. v - lua/autorun/stand_system.lua:55
3. unknown - lua/includes/modules/hook.lua:84
4. Give - [C]:-1
5. unknown - gamemodes/sandbox/gamemode/commands.lua:804
6. unknown - lua/includes/modules/concommand.lua:54


[JoJo's Stand System] lua/weapons/stand_arrow.lua:37: Tried to use a NULL entity!
1. __index - [C]:-1
2. unknown - lua/weapons/stand_arrow.lua:37

Timer Failed! [Simple][@lua/weapons/stand_arrow.lua (line 37)]
Giving >Fifteenth< a stand_arrow