Apache: Site become unavailable when SSL is added - apache

Question

I'm using Apache2 in ubuntu to rout the request to a tomcat webapp. I am also trying to add SSL into this. Below is the apache 000-default.conf file.
<VirtualHost *:80>
ProxyPreserveHost On
# Servers to proxy the connection, or;
# List of application servers:
# Usage:
# ProxyPass / http://[IP Addr.]:[port]/
# ProxyPassReverse / http://[IP Addr.]:[port]/
# Example:
ProxyPass / http://0.0.0.0:8080/
ProxyPassReverse / http://0.0.0.0:8080/
ServerName localhost
</VirtualHost>
<VirtualHost *:443>
ServerAdmin webmaster#localhost
DocumentRoot /opt/apache-tomcat-7.0.79/webapps/myglukose_messaging_portal/
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
SSLEngine On
# Set the path to SSL certificate
# Usage: SSLCertificateFile /path/to/cert.pem
SSLCertificateFile /etc/apache2/ssl/STAR_myglukose_com.crt
SSLCertificateKeyFile /etc/apache2/ssl/private_key.key
ProxyPreserveHost On
ProxyPass / http://<my-ip>/:8080/
ProxyPassReverse / http://<my-ip>/:8080/
ServerName localhost
</VirtualHost>
Everything was fine until I made the configuration for port 443. When that is made, the site simply becomes unavailable and the browser says "This site can’t be reached. refused to connect.". My tomcat web app is deployed as "ROOT" so can be accessed with the port 80 configuration. Whats wrong here?