Public URL below the project description is missing

Hi,
I am newbies to fb messenger bot.
I am go through https://developers.facebook.com/docs/messenger-platform/getting-started/quick-start
go with
Option 3: Remix It on Glitch
and then

  1. In the top-left corner, click the dropdown menu, then copy the public URL below the project description. This will be the base URL for your webhook.

I can’t find public URL below the project description.
Let me know what setting is missing.

If you click ‘show’ your project will open and you can copy the url from the browser window.

The url has the format: https://project-name.glitch.me