There has been an error and the minecraft game has crashed

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I thought that it should have started the game.
What actually happened was...:
Describe what happened here
Well, I waited and then came a report saying that the game has crashed so I couldn't play.
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...