When i create a new world Minecraft closes

When i log in Everything is fine but somehow for me i wanted to create a new world but it closes itself and launcher said crash report
What I expected to happen was...:
Describe what you thought should happen here
Creating a world like normal
What actually happened was...:
Describe what happened here
It Crashed/Closes itself
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...