Error log appears when right click on item in inventories.


here's full error log

tried to track down the causes, but couldn't find it.

-----------------------------------------
Callframe at: getFixes
function: createMenu -- file: ISInventoryPaneContextMenu.lua line # 959 | Vanilla
function: onRightMouseUp -- file: ISInventoryPane.lua line # 1627 | MOD: Clean UI B42.12 Hotfix

ERROR: General f:971, t:1759889032059> ExceptionLogger.logException> Exception thrown
java.lang.reflect.InvocationTargetException at NativeMethodAccessorImpl.invoke0 (Native Method).
Stack trace:
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.base/java.lang.reflect.Method.invoke(Unknown Source)
se.krka.kahlua.integration.expose.caller.MethodCaller.call(MethodCaller.java:62)
se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:210)
se.krka.kahlua.integration.expose.LuaJavaInvoker.call(LuaJavaInvoker.java:200)
se.krka.kahlua.vm.KahluaThread.callJava(KahluaThread.java:191)
se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:851)
se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:174)
se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1826)
se.krka.kahlua.vm.KahluaThread.pcallBoolean(KahluaThread.java:1765)
se.krka.kahlua.integration.LuaCaller.protectedCallBoolean(LuaCaller.java:104)
zombie.ui.UIElement.onRightMouseUp(UIElement.java:1931)
zombie.ui.UIElement.onRightMouseUp(UIElement.java:1889)
zombie.ui.UIElement.onConsumeMouseButtonUp(UIElement.java:1703)
zombie.ui.UIManager.updateMouseButtons(UIManager.java:866)
zombie.ui.UIManager.update(UIManager.java:725)
zombie.GameWindow.logic(GameWindow.java:329)
zombie.GameWindow.frameStep(GameWindow.java:923)
zombie.GameWindow.mainThreadStep(GameWindow.java:647)
zombie.MainThread.mainLoop(MainThread.java:76)
java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException: Cannot invoke "java.util.ArrayList.contains(Object)" because the return value of "zombie.scripting.objects.Fixing.getRequiredItem()" is null
zombie.inventory.FixingManager.getFixes(FixingManager.java:33)
... 23 more
LOG : General f:971, t:1759889032060> -------------------------------------------------------------
attempted index: isEmpty of non-table: null

LOG : General f:971, t:1759889032060> -----------------------------------------
STACK TRACE
-----------------------------------------
function: createMenu -- file: ISInventoryPaneContextMenu.lua line # 960 | Vanilla
function: onRightMouseUp -- file: ISInventoryPane.lua line # 1627 | MOD: Clean UI B42.12 Hotfix

ERROR: General f:971, t:1759889032060> ExceptionLogger.logException> Exception thrown
java.lang.RuntimeException: attempted index: isEmpty of non-table: null at KahluaThread.tableget(KahluaThread.java:1530).
Stack trace:
se.krka.kahlua.vm.KahluaThread.tableget(KahluaThread.java:1530)
se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:502)
se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:174)
se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1826)
se.krka.kahlua.vm.KahluaThread.pcallBoolean(KahluaThread.java:1765)
se.krka.kahlua.integration.LuaCaller.protectedCallBoolean(LuaCaller.java:104)
zombie.ui.UIElement.onRightMouseUp(UIElement.java:1931)
zombie.ui.UIElement.onRightMouseUp(UIElement.java:1889)
zombie.ui.UIElement.onConsumeMouseButtonUp(UIElement.java:1703)
zombie.ui.UIManager.updateMouseButtons(UIManager.java:866)
zombie.ui.UIManager.update(UIManager.java:725)
zombie.GameWindow.logic(GameWindow.java:329)
zombie.GameWindow.frameStep(GameWindow.java:923)
zombie.GameWindow.mainThreadStep(GameWindow.java:647)
zombie.MainThread.mainLoop(MainThread.java:76)
java.base/java.lang.Thread.run(Unknown Source)
LOG : General f:971, t:1759889032060> -----------------------------------------
STACK TRACE
-----------------------------------------
function: createMenu -- file: ISInventoryPaneContextMenu.lua line # 960 | Vanilla
function: onRightMouseUp -- file: ISInventoryPane.lua line # 1627 | MOD: Clean UI B42.12 Hotfix