How does my world command box make the world empty?

1, you need to start the game first. Click the single player game as shown in the figure.

2. Next, you need to click "More World Options", as shown in the figure.

3. Change the original box below to 0, as shown in the figure.

4. Next, click "Use preset" after modification.

5. Next, find this situation, and then click OK.

6. Click "Create a New World".

7. Discovery can create an empty world.