Users get "Not found/404" when clicks link "Special thanks to our beta users"

Steps to reproduce:

1. Create a project
2. Go to Unity -> About Unity
3. Click "Special thanks to our beta users"
4. Observe the result

Actual results: Users get a page which says "Not found/404".

Expected results: A page should be opened, or the message with the link should be removed from the "About Unity" window.

Reproducible with versions: 6000.0.44f1

Not reproducible with versions: -

Can’t test with versions: 6000.1.0b12 and 6000.2.0a7 as the "About Unity" window has a different UI.

Tested on (OS): M1 Max - Sequoia 15.3.2