Randomly getting this bug
function: LoadSurvivor -- file: SuperSurvivorManager.lua line # 107
function: SuperSurvivorsLoadGridsquare -- file: SuperSurvivorsMod.lua line # 391

ERROR: General , 1627652396186> ExceptionLogger.logException> Exception thrown java.lang.RuntimeException: attempted index: getGroupArea of non-table: null at KahluaThread.tableget line:1689.
ERROR: General , 1627652396186> DebugLogStream.printException> Stack trace:
java.lang.RuntimeException: attempted index: getGroupArea 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:38)
at zombie.Lua.LuaEventManager.triggerEvent(LuaEventManager.java:88)
at zombie.iso.IsoChunk.doLoadGridsquare(IsoChunk.java:2926)
at zombie.iso.IsoChunkMap.update(IsoChunkMap.java:197)
at zombie.iso.IsoCell.updateInternal(IsoCell.java:5611)
at zombie.util.lambda.Invokers$Params1$CallbackStackItem.run(Invokers.java:37)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.core.profiling.AbstractPerformanceProfileProbe.lambda$invokeAndMeasure$0(AbstractPerformanceProfileProbe.java:83)
at zombie.util.lambda.Stacks$Params3$CallbackStackItem.invoke(Stacks.java:230)
at zombie.util.lambda.Stacks$GenericStack.invokeAndRelease(Stacks.java:26)
at zombie.util.Lambda.capture(Lambda.java:130)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:81)
at zombie.iso.IsoCell.update(IsoCell.java:5572)
at zombie.iso.IsoWorld.updateInternal(IsoWorld.java:3175)
at zombie.util.lambda.Invokers$Params1$CallbackStackItem.run(Invokers.java:37)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.core.profiling.AbstractPerformanceProfileProbe.lambda$invokeAndMeasure$0(AbstractPerformanceProfileProbe.java:83)
at zombie.util.lambda.Stacks$Params3$CallbackStackItem.invoke(Stacks.java:230)
at zombie.util.lambda.Stacks$GenericStack.invokeAndRelease(Stacks.java:26)
at zombie.util.Lambda.capture(Lambda.java:130)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:81)
at zombie.iso.IsoWorld.update(IsoWorld.java:3113)
at zombie.gameStates.IngameState.updateInternal(IngameState.java:1612)
at zombie.gameStates.IngameState.update(IngameState.java:1319)
at zombie.gameStates.GameStateMachine.update(GameStateMachine.java:101)
at zombie.GameWindow.logic(GameWindow.java:285)
at zombie.core.profiling.AbstractPerformanceProfileProbe.invokeAndMeasure(AbstractPerformanceProfileProbe.java:71)
at zombie.GameWindow.frameStep(GameWindow.java:726)
at zombie.GameWindow.run_ez(GameWindow.java:642)
at zombie.GameWindow.mainThread(GameWindow.java:471)
at java.base/java.lang.Thread.run(Unknown Source)
LOG : General , 1627652396187> -----------------------------------------
STACK TRACE