BUG #16398: Installation process fails if StackBuilder is selected.

The following bug has been logged on the website:

Bug reference:      16398
Logged by:          Luilver Garces Briñas
Email address:      luilver@gmail.com
PostgreSQL version: 12.2
Operating system:   Windows 10
Description:

Hello

I'm trying StackBuilder for getting postgis successfully installed on my
postgres db but I'm getting an error: 

"""
Stack Builder Error:

Couldn't access the URL
https://www.postgresql.org/applications-v2.xml

ERROR: Failed to connect to www.postgresql.org port 443:
Bad access
"""

Even with Postgres 10 and 11 installation fails.

Regards,

Luilver