About AstarPath Thread creation failed

The current A* version is 3.8.1 and the Unity version is 2017.4.23f1. I run the game on the Android emulator. The log records that the thread creation failed in AstarPath.Awake(). This is a probabilistic trigger. What is the reason for this? ?

threads.Length is 4


Version 3.8.1 is more than 4 years old at this point. I think it is likely that this issue has been fixed in a later version.