ERROR: General , 1659396459776> ExceptionLogger.logException> Exception thrown java.lang.RuntimeException: attempted index: isDriver of non-table: null at KahluaThread.tableget line:1689.
ERROR: General , 1659396459776> DebugLogStream.printException> Stack trace:
java.lang.RuntimeException: attempted index: isDriver 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:92)
at zombie.gameStates.IngameState.updateInternal(IngameState.java:1660)
at zombie.gameStates.IngameState.update(IngameState.java:1369)
at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:101)
at zombie.GameWindow.logic(GameWindow.java:297)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.GameWindow.frameStep(GameWindow.java:764)
at zombie.GameWindow.run_ez(GameWindow.java:680)
at zombie.GameWindow.mainThread(GameWindow.java:494)
at java.base/java.lang.Thread.run(Unknown Source)
idk what it means how do I fix this