Minecraft Project Ozone crashes.

[Trimaex1]

Hey there.
My name is Tom,
I'm playing Project Ozone 2 on my macbook air.
But it crashes the last two days randomly and I don't know what the cause is.
I hope you can help me with solving my crash issue.

Here is my FML Log: https://puu.sh/v1f10/caede8d282.txt

Thanks for helping.