Add this to .htaccess : AddType text/html .shtml
If the page loads but specific content (like a header or footer) is missing, check your syntax. SSI requires a very specific format with no extra spaces: view shtml fix
Fixing a faulty .shtml view requires understanding not just code, but the invisible handshake between the web server (Apache, Nginx, IIS) and the file itself. The most common symptom is stark: where a navigation menu or a copyright notice should appear, there is nothing but a blank space—or worse, a line of raw code exposed to the user. Add this to
sudo a2enmod include sudo systemctl restart apache2 view shtml fix