Error 403 on www.lgdb.org

I can access the LGDB only via the domain name “lgdb.org”, but “www.lgdb.org” does not work, I always get an annoying error 403.

The error message:
“Forbidden

You don't have permission to access / on this server.
Apache/2.4.10 (Debian) Server at www.lgdb.org Port 443”

These URLs work:
http://lgdb.org/
https://lgdb.org/

These URLs don't work:
http://www.lgdb.org/
https://www.lgdb.org/

Many links on the Internet point on www.lgdb.org, also search engines have www.lgdb.org in their “memory” so this domain is important. Please make sure this domain works again, okay?

Thank you.

Forums: 

Thanks for the Heads Up, it is now fixed.

When we switched to using let's encrypt https://letsencrypt.org/ for ssl, i didn't prepare the www alais of the domain.