A way to fix the Compatability Test

Thank you for sharing this with our users.
This indeed may be hlpful in some cases.

Kind regards!
Bogdan S.

I had wordfence-waf already in auto_prepend so i placed the snippet below into the htaccess:

# .htaccess snippet 
# W3TC Apache2 modules test with fastcgi

<IfModule mod_fastcgi.c>
	<IfModule mod_deflate.c>
	SetENV HTTP_X_A2ENMODS_FPM_deflate mod_loaded
	</IfModule>
	<IfModule mod_env.c>
	SetENV HTTP_X_A2ENMODS_FPM_env mod_loaded
	</IfModule>
	<IfModule mod_expires.c>
	SetENV HTTP_X_A2ENMODS_FPM_expires mod_loaded
	</IfModule>
	<IfModule mod_filter.c>
	SetENV HTTP_X_A2ENMODS_FPM_filter mod_loaded
	</IfModule>
	<IfModule mod_ext_filter.c>
	SetENV HTTP_X_A2ENMODS_FPM_ext_filter mod_loaded
	</IfModule>
	<IfModule mod_headers.c>
	SetENV HTTP_X_A2ENMODS_FPM_headers mod_loaded
	</IfModule>
	<IfModule mod_mime.c>
	SetENV HTTP_X_A2ENMODS_FPM_mime mod_loaded
	</IfModule>
	<IfModule mod_rewrite.c>
	SetENV HTTP_X_A2ENMODS_FPM_rewrite mod_loaded
	</IfModule>
	<IfModule mod_setenvif.c>
	SetENV HTTP_X_A2ENMODS_FPM_setenvif mod_loaded
	</IfModule>
</IfModule>

#
# .htaccess snippet END

And this code was placed into the wordfence-waf auto_prepended php:

<?php

// Only do this if the function apache_get_modules() does not exist, despite Util_Environment::is_apache() is true
if ( ! function_exists( 'apache_get_modules' ) ) {
	function apache_get_modules() {
		// Pre-Fake some defaults
		$apache_returned_modules = array( 'core','mod_version','http_core','mod_so');
		// Check for mod_loaded in _SERVER env
		$env_mods_loaded = array_keys($_SERVER,'mod_loaded',true);

		foreach ($env_mods_loaded as $env_mod_loaded) {
			if ( strpos($env_mod_loaded,'HTTP_X_A2ENMODS_FPM_') !== false ) {
				$apache_returned_modules[] = preg_replace('/.*HTTP_X_A2ENMODS_FPM_/', 'mod_', $env_mod_loaded);
			}
		}
		return $apache_returned_modules;
	}
}