Spawned in world and this thing appeared out of nowhere only created

new user - java error - unable to play

When i start the 17w50a snapshot, Minecraft crash

All it says is not responding and ik about mc forms but i dont want to go there every time to play mc

i have been waiting for years i am begging please fix please i will do anything

Graphical Bugs?

I cant start my launcher if i do it will stop. I cant do anything