I'm attempting to setup Canonical links for a number of PDF files on my website.
I have urls with this path "**https://www.test.com/wp-content/themes/theme_TEST/pdf/fr/test_04.pdf**" knowing that I can have several languages instead of "fr".
In httpd.conf, i set this configuration
<DirectoryMatch "^/home/wwwTEST/test.eu/www/test/wp-content/themes/theme_TEST/pdf/[^/]+">
<FilesMatch "\.pdf$">
Header set Link 'https://www.test.com/Catalog.html?pdf=<%{REQUEST_FILENAME}e>; rel="canonical"'
</FilesMatch>
</DirectoryMatch>
Restart Httpd Server Command
sudo service httpd restart
When i try to check the http status with https://httpstatus.io, i got this
How to correct to have the good name, and not null ?