PROBLEM [SOLVED] What is "Setup → Website Base URL" in Migration Steps?

[laptopacademy]

hi

in Migration steps, i do not understand the following:

Go to Setup → Website Base URL

what does that mean? browse in a web-browser to the url of the site?
when i do, i just get the homepage of the website.

i do not see "localhost" or “Our suggestion is:…”

Code:

Change http://localhost/ (or whatever) to your new site URL. Hint: You can copy it from the “Our suggestion is:…” message that should be displayed below.

Where to find that?

thx