Unable to restart apache

Hi,
I started a lightsail instance for Django. Everything was working fine and was able to access the domain. The last thing I was doing was trying to redirect non-www to www. and it worked. The second day I tried to log to the domain I get the following:
This site can’t be reached
www.realjetset.com refused to connect.

Also, i cannot restart apache with the following command
sudo /opt/bitnami/ctlscript.sh restart apache
it gives: Failed to restart apache.

I even created a new instance and followed exactly the procedure on https://aws.amazon.com/getting-started/hands-on/deploy-python-application/
and I end up getting the same errors. I think all are related to one issue or error i made. Appreciate any help as I am stuck and my beginner's luck seems to have run out