It keeps Crashing everytime i try to open a world in minecraft the version im using is 1.9.4 and im on windows 10 I cant play minecraft and i would love if you would help

Put the summary of the bug you're having here

What I expected to happen was...:
It to load the world and me to play Minecraft

What actually happened was...:
It tried to load the world but just crashed and showed a error thing

Steps to Reproduce:
1. Open minecraft
2. Open a world
3. CRASH......