when i try to create a new world it goes to the new world with music but you can only see blue and clouds

Put the summary of the bug you're having here

*What I expected to happen was it to create a new world

*What actually happened was it put me in open blue, not water, and clouds

Steps to Reproduce:
1. open as normal after you have updated minecraft
2. single player create new world or existing one
3.it shows up blue with clouds