1) First of all, try debugging your SSL by running the following command
openssl s_client -servername <hostname> -connect <hostname>:443 -state
if it prints this message:
Reading SSL3: Warning: Unrecognized Name
2) , then try adding
ServerName www.healthdrop.in ServerAlias healthdrop.in
in /etc/apache2/sites-available/default-ssl.conf or in a virtual host file
3) then restart apache server
sudo service apache2 restart
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