Game crashed!

Help, the game keeps crashing when my spike hits an unowned organelle, the logs are here, please note that the crash log was unavailable at the time so it is not available on this post.

It looks like you are playing 0.5.3.1, correct?
Looks like to be the random probably physics related crash:

0.5.4-rc1 has a newer Godot version that fixed some physics stuff.