There are some cases where we implement activated the SSL for our domain but entire site breaks.

Why its happening?
This is because website is served with https:// but CSS file is still referencing http:// instead https:// .
It’s known as a ‘Mixed Content’ error
How to resolve?
To resolve the issue please follow below step.
- Open FTP or file manager in cPanel
- Open file wp-config.php, file will could be found in root.
- Add line $_SERVER[“HTTPS”] = “on”;
See in action
Hope it will help!