Error after 65k cleanup

My game is forced to paused after 65k cleanup is executed. I got the following errors :

65K cleanup
System.NullReferenceException: Object reference not set to an instance of an object
at Pathfinding.NodeRunData.ClearPathIDs () [0x00017] in G:\unity3d\tileMap\Assets\AstarPathfindingProject\Core\MultithreadClasses.cs:58
at Pathfinding.Path.PrepareBase (Pathfinding.NodeRunData runData) [0x00011] in G:\unity3d\tileMap\Assets\AstarPathfindingProject\Core\Path.cs:596
at AstarPath.CalculatePathsThreaded (System.Object _threadInfo) [0x00116] in G:\unity3d\tileMap\Assets\AstarPathfindingProject\Core\AstarPath.cs:2075
Error : This part should never be reached

Even if the game continues, gameobject’s paths and targets are messed up. I don’t want this happen in my game.
I m doing a simulation game which passengers gets on and off trains. My game relies heavily on this pathfinding algorithm.

Any ideas to solve this problem?
Thanks in advance.

What version are you using? Looking at the stacktrace, it seems to be 3.2.5.x?

it appears to be 3.2.5.1 from the changelog

Ok. Then it is likely that this issue has been fixed in later versions. Unless you are using RVO you could try upgrading to see if that fixes it (make sure you read the upgrade guide).

i have updated it and it works fine, thank you.