[MC-78769] After creating a new world nothing was generated and when leaving the world this crash happened

After creating a new world nothing was generated and when leaving the world this crash happened

What I expected to happen was...:
World should normally be generated

What actually happened was...:
World did not generate

Steps to Reproduce:
1. I dont know happend to me first time
2. ...
3. ...

java.lang.NullPointerException: Updating screen events
	at axq.a(SourceFile:68)
	at axv.a(SourceFile:350)
	at axv.k(SourceFile:413)
	at axv.p(SourceFile:390)
	at avf.s(SourceFile:1497)
	at avf.av(SourceFile:888)
	at avf.a(SourceFile:325)
	at net.minecraft.client.main.Main.main(SourceFile:124)