Minecraft 0.0.11a stone flat world?

I would like to play Minecraft version 0.0.11a, but when I start this, only a stone flatworld comes up.
how can i fix this?

Can anyone help me?

Lg

Version 0.0.11a doesn't have as many versions as Version 1.16.4

This also includes missing components of world generation.

Positive

Thanks!

https://classic.minecraft.net/

Because this is a development version

This is 0.30

Nope, normally a world with grass and mountains should be generated, see here

you have to go to %appdata% and open .minecraft and delete level.dat file

THANK YOU SO MUCH IT WORKS NOW!