I'm trying preload a file pushing it by an HTML header based on HTTP/2 directive. But I receive an error 500 after make any modification in htaccess file.
Here is the piece of code that i'm using in htaccess:
# add custom header to single file
<Files index.html>
Link: </themes/PRS060142/assets/css/570eb83859dc23dd0eec423a49e147fe.woff2>; rel=preload; as=font
</Files>
Somebody knows what is the correct way to send HTML heads by htaccess?