You have this error message on your apache logs
/home/www/.htaccess: Invalid command 'Header', perhaps misspelled or defined by a module not included in the server configuration
Check the .htaccess file and there is no Header command…
<FilesMatch "\.(xml|jpg)$"> FileETag None Header unset ETag Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set Pragma "no-cache" Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT" </FilesMatch>
In fact, this issue is due to the header apache’s module whose’s missing.
To install it, run
And don’t forget to restart apache
service apache2 restart