when i add a turret to my contraption it wont let me dupe it and this error pops up in the console when i dupe it

[Turret Tool+] lua/entities/gmod_turretplus.lua:157: attempt to index global 'WireLib' (a nil value)
1. PreEntityCopy - lua/entities/gmod_turretplus.lua:157
2. Save - lua/includes/modules/duplicator.lua:134
3. CopyEntTable - lua/includes/modules/duplicator.lua:565
4. Copy - lua/includes/modules/duplicator.lua:630
5. RightClick - gamemodes/sandbox/entities/weapons/gmod_tool/stools/duplicator.lua:106
6. unknown - gamemodes/sandbox/entities/weapons/gmod_tool/shared.lua:265

please help me fix this.