ISCampingMenuEnhaced.lua error

STACK TRACE
-----------------------------------------
function: timeString -- file: ISCampingMenuEnhaced.lua line # 5
function: doCampingMenu -- file: ISCampingMenu.lua line # 337
Callframe at: se.krka.kahlua.integration.expose.MultiLuaJavaInvoker@b44d3df8
function: createMenu -- file: ISWorldObjectContextMenu.lua line # 1511
function: createMenu -- file: ISMenuContextWorld.lua line # 50
function: createWorldMenu -- file: ISContextManager.lua line # 28
function: doRClick -- file: ISObjectClickHandler.lua line # 56
function: onObjectRightMouseButtonUp -- file: ISObjectClickHandler.lua line # 360

ERROR: General     , 1651105258953> 830,805,051> ExceptionLogger.logException> Exception thrown java.lang.RuntimeException: __div not defined for operands in timeString at KahluaUtil.fail line:82.
ERROR: General     , 1651105258953> 830,805,051> DebugLogStream.printException> Stack trace:
java.lang.RuntimeException: __div not defined for operands in timeString
	at se.krka.kahlua.vm.KahluaUtil.fail(KahluaUtil.java:82)
	at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:676)
	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:210)
	at zombie.Lua.LuaEventManager.triggerEventGarbage(LuaEventManager.java:224)
	at zombie.Lua.LuaManager$GlobalObject.triggerEvent(LuaManager.java:2999)
	at jdk.internal.reflect.GeneratedMethodAccessor968.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:169)
	at zombie.ui.UIManager.update(UIManager.java:930)
	at zombie.GameWindow.logic(GameWindow.java:253)
	at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
	at zombie.GameWindow.frameStep(GameWindow.java:744)
	at zombie.GameWindow.run_ez(GameWindow.java:660)
	at zombie.GameWindow.mainThread(GameWindow.java:474)
	at java.base/java.lang.Thread.run(Unknown Source)