Seem to get this error once I add this to my modlist

`attempted index: addFreeTrait of non-table: null
function: ETEProfessions -- file: ETEMainCreationMethods.lua line # 559 | MOD: Extra Trait Effects
Callframe at: se.krka.kahlua.integration.expose.MultiLuaJavaInvoker@a2935a81
function: createAvatar -- file: CharacterCreationHeader.lua line # 331 | Vanilla
function: create -- file: CharacterCreationHeader.lua line # 173 | Vanilla
function: instantiate -- file: MainScreen.lua line # 820 | Vanilla
function: addToUIManager -- file: ISUIElement.lua line # 1009 | Vanilla
function: LoadMainScreenPanelInt -- file: MainScreen.lua line # 2233 | Vanilla
function: LoadMainScreenPanel -- file: MainScreen.lua line # 2142 | Vanilla
java.lang.RuntimeException: attempted index: addFreeTrait 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.Lua.LuaEventManager.triggerEventGarbage(LuaEventManager.java:103)
at zombie.characters.IsoSurvivor.<init>(IsoSurvivor.java:114)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Unknown Source)
at java.base/java.lang.reflect.Constructor.newInstance(Unknown Source)
at se.krka.kahlua.integration.expose.caller.ConstructorCaller.call(ConstructorCaller.java:47)
at se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:198)
at se.krka.kahlua.integration.expose.MultiLuaJavaInvoker.call(MultiLuaJavaInvoker.java:79)
at se.krka.kahlua.vm.KahluaThread.callJava(KahluaThread.java:182)
at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:1007)
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:65)
at zombie.gameStates.MainScreenState.enter(MainScreenState.java:291)
at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:135)
at zombie.GameWindow.logic(GameWindow.java:298)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.GameWindow.frameStep(GameWindow.java:765)
at zombie.GameWindow.run_ez(GameWindow.java:681)
at zombie.GameWindow.mainThread(GameWindow.java:495)
at java.base/java.lang.Thread.run(Unknown Source)
`