Process for Renewing Lighttpd certificate

Step 1:

certbot certonly -d scotnpatti.com -d brain.scotnpatti.com -d www.scotnpatti.com

Responses: How would you like to authenticate... -> 2 Place files in ....

Outputs:

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/www.scotnpatti.com/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/www.scotnpatti.com/privkey.pem
   Your cert will expire on 2020-11-24. To obtain a new or tweaked
   version of this certificate in the future, simply run certbot
   again. To non-interactively renew *all* of your certificates, run
   "certbot renew"

Now run the following:

cat /etc/letsencrypt/live/www.scotnpatti.com/privkey.pem /etc/letsencrypt/live/www.scotnpatti.com/cert.pem > /etc/letsencrypt/live/www.scotnpatti.com/combined.pem

Now restart lighttpd and you should be good!