[BUG] Possible Null Value at outerNode in EliminateHoles in extreme rare condition

[OmarVector]

We are able to regenerate the error after we tracked down that data created from EarcutLibrary.Flatten() till the crash happened.

we applied a temporary fix for it inside EliminateHoles() method by checking if outerNode!=null inside the process holes from left to right Loop , we tested and it seems working fine with no more issue. hope that may help u to figure it out.

You can Regenerate the issue using this script inside unity
https://gist.github.com/OmarVector/343e15395b530b5d69adcfb07d327ae7