Known problems

Apache + CGI (PHP-FPM)

Note that depending on the webserver and PHP integration therein you might need some additional configuration.

Specifically Apache + CGI (PHP-FPM) needs additional vhost/htaccess configuration in order to have proper authorization header handling.

SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1

See also: https://symfony.com/doc/current/setup/web_server_configuration.html#using-mod-proxy-fcgi-with-apache-2-4