trying to shoot the shooting NPC's drawing all the zombies. this might be an issue with the visible tracer version. switching back to the no arsenal/brita version

UPDATE: yep switching to "Advanced_trajectory - Car are concealment (Don't Need Arsenal (26))" from "Advanced trajectory - Cars are Concealment + Tracers" fixed the issue

`attempted index: removeFromSquare of non-table: null
function: itemremove -- file: Advanced_trajectory_core.lua line # 21 | MOD: Advanced trajectory - Cars are Concealment + Tracers
function: checkontick -- file: Advanced_trajectory_core.lua line # 560 | MOD: Advanced trajectory - Cars are Concealment + Tracers
java.lang.RuntimeException: attempted index: removeFromSquare 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:1624)
at zombie.gameStates.IngameState.update(IngameState.java:1333)
at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:101)
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)
`

Okay, so not sure why but it's having trouble with removing the bullet after it reaches a certain distance. Please do try the non-tracer version to see if it works better. It isn't supposed to happen, but if you want to look into it, please go to the original advanced traj mod (bibi) for troubleshooting.