pinkslip error

LOG  : General     , 1665452363744> 685,273,537> [CarWanna]: Spawning Vehicle : Base.AMC_bmw_custom at 1669.18896484375 x 14276.943359375 for admin
LOG  : General     , 1665452363744> 685,273,538> -------------------------------------------------------------
attempted index: setUsedDelta of non-table: null
LOG  : General     , 1665452363745> 685,273,538> -----------------------------------------
STACK TRACE
-----------------------------------------
function: spawnVehicle -- file: cw_ClientCommands.lua line # 131 | MOD: CarWanna
function: OnClientCommand -- file: cw_ClientCommands.lua line # 175 | MOD: CarWanna
LOG  : General     , 1665452363745> 685,273,539> -----------------------------------------
STACK TRACE
-----------------------------------------
function: spawnVehicle -- file: cw_ClientCommands.lua line # 131 | MOD: CarWanna
function: OnClientCommand -- file: cw_ClientCommands.lua line # 175 | MOD: CarWanna
ERROR: General     , 1665452363745> 685,273,538> ExceptionLogger.logException> Exception thrown java.lang.RuntimeException: attempted index: setUsedDelta of non-table: null at KahluaThread.tableget line:1689.
ERROR: General     , 1665452363745> 685,273,538> DebugLogStream.printException> Stack trace:
java.lang.RuntimeException: attempted index: setUsedDelta of non-table: null
	at se.krka.kahlua.vm.KahluaThread.tableget(KahluaThread.java:1689)
	at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:641)
	at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:163)
	at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1980)
	at se.krka.kahlua.vm.KahluaThread.pcallvoid(KahluaThread.java:1812)
	at se.krka.kahlua.integration.LuaCaller.pcallvoid(LuaCaller.java:66)
	at se.krka.kahlua.integration.LuaCaller.protectedCallVoid(LuaCaller.java:139)
	at zombie.Lua.Event.trigger(Event.java:64)
	at zombie.Lua.LuaEventManager.triggerEvent(LuaEventManager.java:214)
	at zombie.network.GameServer.receiveClientCommand(GameServer.java:4163)
	at zombie.network.PacketTypes$PacketType.onServerPacket(PacketTypes.java:1016)
	at zombie.network.GameServer.mainLoopDealWithNetData(GameServer.java:1527)
	at zombie.network.GameServer.main(GameServer.java:801)