Everytime I right click, an error pops up. I can see the plumbing menu and can see only water pipes (but can't see what its requirement)

here's the error log :
`function: WaterPipesWorldContextMenuPost -- file: waterpipes.lua line # 716 | MOD: Plumbing
Callframe at: se.krka.kahlua.integration.expose.MultiLuaJavaInvoker@994deb3f
function: createMenu -- file: ISWorldObjectContextMenu.lua line # 1543 | Vanilla
function: createMenu -- file: ISMenuContextWorld.lua line # 50 | Vanilla
function: createWorldMenu -- file: ISContextManager.lua line # 28 | Vanilla
function: doRClick -- file: ISObjectClickHandler.lua line # 60 | Vanilla
function: onObjectRightMouseButtonUp -- file: ISObjectClickHandler.lua line # 379 | Vanilla
java.lang.RuntimeException: Object tried to call nil in WaterPipesWorldContextMenuPost
at se.krka.kahlua.vm.KahluaUtil.fail(KahluaUtil.java:82)
at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:971)
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:214)
at zombie.Lua.LuaEventManager.triggerEventGarbage(LuaEventManager.java:228)
at zombie.Lua.LuaManager$GlobalObject.triggerEvent(LuaManager.java:3086)
at jdk.internal.reflect.GeneratedMethodAccessor1310.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.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:173)
at zombie.ui.UIManager.update(UIManager.java:938)
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:681)
at zombie.GameWindow.mainThread(GameWindow.java:495)
at java.base/java.lang.Thread.run(Unknown Source)
`