I unfortunately had this bug in the console though the mod does seem to work:

`Callframe at: get
function: getItemCategory -- file: HolsterTime_Main.lua line # 46 | MOD: HolsterTime
function: new -- file: HolsterTime_Main.lua line # 68 | MOD: HolsterTime
function: equipWeapon -- file: ISInventoryPaneContextMenu.lua line # 3101 | Vanilla
function: OnPrimaryWeapon -- file: ISInventoryPaneContextMenu.lua line # 3025 | Vanilla
function: onMouseUp -- file: ISContextMenu.lua line # 90 | Vanilla
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at se.krka.kahlua.integration.expose.caller.MethodCaller.call(MethodCaller.java:62)
at se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:198)
at se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:188)
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.pcallBoolean(KahluaThread.java:1924)
at se.krka.kahlua.integration.LuaCaller.protectedCallBoolean(LuaCaller.java:104)
at zombie.ui.UIElement.onMouseUp(UIElement.java:1228)
at zombie.ui.UIManager.update(UIManager.java:816)
at zombie.GameWindow.logic(GameWindow.java:262)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.GameWindow.frameStep(GameWindow.java:765)
at zombie.GameWindow.run_ez(GameWindow.java:667)
at zombie.GameWindow.mainThread(GameWindow.java:495)
at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
at java.base/jdk.internal.util.Preconditions.outOfBounds(Unknown Source)
at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Unknown Source)
at java.base/jdk.internal.util.Preconditions.checkIndex(Unknown Source)
at java.base/java.util.Objects.checkIndex(Unknown Source)
at java.base/java.util.ArrayList.get(Unknown Source)
... 20 more
`