IndexOutOfRangeException

General Grid graph
1

I have these two errors on Android. What could be causing them?

Message: IndexOutOfRangeException: Index was outside the bounds of the array.
Exception: IndexOutOfRangeException: Index was outside the bounds of the array.
	at Pathfinding.HierarchicalGraph+JobRecalculateComponents.RemoveHierarchicalNode(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph+JobRecalculateComponents.RemoveHierarchicalNode(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph+JobRecalculateComponents.Execute(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph.RecalculateIfNecessary(<00000000000000000000000000000000>)
	at Pathfinding.WorkItemProcessor.ProcessWorkItems(<00000000000000000000000000000000>)
	at AstarPath.PerformBlockingActions(<00000000000000000000000000000000>)
	at AstarPath.Update(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph.RecalculateIfNecessary(Unknown Source)
	at Pathfinding.WorkItemProcessor.ProcessWorkItems(Unknown Source)
	at AstarPath.PerformBlockingActions(Unknown Source)
	at AstarPath.Update(Unknown Source)
Reported at:

Message: IndexOutOfRangeException: Index was outside the bounds of the array.
Exception: IndexOutOfRangeException: Index was outside the bounds of the array.
	at Pathfinding.HierarchicalGraph+JobRecalculateComponents.FloodFill(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph+JobRecalculateComponents.Execute(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph.RecalculateIfNecessary(<00000000000000000000000000000000>)
	at Pathfinding.WorkItemProcessor.ProcessWorkItems(<00000000000000000000000000000000>)
	at AstarPath.PerformBlockingActions(<00000000000000000000000000000000>)
	at AstarPath.Update(<00000000000000000000000000000000>)
	at Pathfinding.HierarchicalGraph.RecalculateIfNecessary(Unknown Source)
	at Pathfinding.WorkItemProcessor.ProcessWorkItems(Unknown Source)
	at AstarPath.PerformBlockingActions(Unknown Source)
	at AstarPath.Update(Unknown Source)
Reported at:
2

Hi

Which version of the package are you using?

3

I use A* Pathfinding Project v5.0.9

4

Interesting. Does it only happen on android, or can you replicate it in the editor too?

5

Only Android. We found it after updating the asset to version 5.0.5
Unity 2022.3.22f1

6

Can you reliably replicate this? How often does it happen?

7

Approximately 1% of players (~100 players per week). We can’t reproduce it, we see it only in production :frowning:

8

Hmm. Sounds incredibly hard to debug, I’m afraid. I think this is a multithreading race condition, but without being able to reproduce it at all, it’s incredibly hard to track down.