I can´t make a new world

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I exept to make a new world.
What actually happened was...:
Describe what happened here
But it just loaded.
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...go on singel player and pres create new world.
3. ...then press creat new world.