Ammo Maker Error

`attempted index: ammoTypes of non-table: null
function: ammoMakerGetAmmoData -- file: ammomaker_ammoUtility.lua line # 210 | MOD: Ammo Maker
function: ammoMakerGetCasingType -- file: ammomaker_ammoUtility.lua line # 246 | MOD: Ammo Maker
function: spawnCasing -- file: ammomaker_playerAttackFinished.lua line # 14 | MOD: Ammo Maker
java.lang.RuntimeException: attempted index: ammoTypes of non-table: null
    at se.krka.kahlua.vm.KahluaThread.tableget(KahluaThread.java:1667)
    at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:479)
    at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:173)
    at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1963)
    at se.krka.kahlua.vm.KahluaThread.pcallvoid(KahluaThread.java:1790)
    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:72)
    at zombie.Lua.LuaEventManager.triggerEvent(LuaEventManager.java:364)
    at zombie.ai.states.SwipeStatePlayer.exit(SwipeStatePlayer.java:608)
    at zombie.ai.StateMachine.stateExit(StateMachine.java:260)
    at zombie.ai.StateMachine.removeSubstate(StateMachine.java:171)
    at zombie.ai.StateMachine.lambda$changeState$2(StateMachine.java:66)
    at zombie.util.lambda.Consumers$Params1$CallbackStackItem.accept(Consumers.java:39)
    at zombie.util.list.PZArrayUtil.forEach(PZArrayUtil.java:997)
    at zombie.util.Lambda.lambda$forEachFrom$2(Lambda.java:217)
    at zombie.util.lambda.Stacks$Params4$CallbackStackItem.invoke(Stacks.java:301)
    at zombie.util.lambda.Stacks$GenericStack.invokeAndRelease(Stacks.java:26)
    at zombie.util.Lambda.capture(Lambda.java:146)
    at zombie.util.Lambda.forEachFrom(Lambda.java:214)
    at zombie.ai.StateMachine.changeState(StateMachine.java:62)
    at zombie.ai.StateMachine.changeState(StateMachine.java:36)
    at zombie.characters.IsoGameCharacter.actionStateChanged(IsoGameCharacter.java:14987)
    at zombie.characters.IsoPlayer.actionStateChanged(IsoPlayer.java:10440)
    at zombie.characters.action.ActionContext.invokeAnyStateChangedEvents(ActionContext.java:673)
    at zombie.characters.action.ActionContext.postUpdateInternal(ActionContext.java:99)
    at zombie.characters.action.ActionContext.update(ActionContext.java:73)
    at zombie.characters.IsoGameCharacter.postUpdateInternal(IsoGameCharacter.java:12774)
    at zombie.characters.IsoGameCharacter.postupdate(IsoGameCharacter.java:12714)
    at zombie.characters.IsoPlayer.postupdateInternal(IsoPlayer.java:4476)
    at zombie.characters.IsoPlayer.postupdate(IsoPlayer.java:4468)
    at zombie.MovingObjectUpdateSchedulerUpdateBucket.postupdate(MovingObjectUpdateSchedulerUpdateBucket.java:89)
    at zombie.MovingObjectUpdateScheduler.postupdate(MovingObjectUpdateScheduler.java:183)
    at zombie.iso.IsoWorld.updateWorld(IsoWorld.java:4210)
    at zombie.iso.IsoWorld.updateInternal(IsoWorld.java:4317)
    at zombie.iso.IsoWorld.update(IsoWorld.java:4231)
    at zombie.gameStates.IngameState.updateInternal(IngameState.java:1699)
    at zombie.gameStates.IngameState.update(IngameState.java:1464)
    at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:87)
    at zombie.GameWindow.logic(GameWindow.java:382)
    at zombie.GameWindow.frameStep(GameWindow.java:916)
    at zombie.GameWindow.mainThreadStep(GameWindow.java:642)
    at zombie.MainThread.mainLoop(MainThread.java:76)
    at java.base/java.lang.Thread.run(Unknown Source)
`