RSS return Server returned HTTP Error 404: Not Found on Server returned HTTP Err

Hello there!

I am writing here because i have problem with custom feeds that I have created for my wordpress.

What happen is that it does not seems to be valid and my answer from https://feedvalidator.org/ is that the Server returned HTTP Error 404: Not Found

Here is how I call my custom rss feeds:

remove_all_actions( 'do_feed_rdf', 'do_feed_rdf', 10, 1 );
remove_all_actions( 'do_feed_rss', 'do_feed_rss', 10, 1 );
remove_all_actions( 'do_feed_rss2', 'do_feed_rss2', 10, 1 );
remove_all_actions( 'do_feed_atom', 'do_feed_atom', 10, 1 );

add_action( 'do_feed_rss2', 'rss2', 10, 1 );
function rss2( $for_comments ) {
	load_template( TEMPLATEPATH . '/feeds/feed.php' );
}

global $allfeeds;
$allfeeds = array(
  	"news",
  	"tour-dates",
  	"bands",
  	"videos",
  	"tracks",
  	"pictures",
  	"festivals"
);

foreach ($allfeeds as $f){
	$f2 = preg_replace("/-/", "_", $f);
	eval("
							function create_".$f2."_feed () {
								load_template( TEMPLATEPATH . '/feeds/feed-".$f.".php');
							}
					");
}

// Replace default feed rewrite rules
function customise_feed_rules($rules) {
    global $allfeeds;
    foreach ($allfeeds as $f){
    	$new_rules["feed\/".$f] = "index.php?feed=".$f."_feed";
    }
    return $new_rules + $rules;
}

// Add the custom feed and update rewrite rules
function add_custom_feed() {
		global $allfeeds;

		foreach ($allfeeds as $f){
			$f = preg_replace("/-/", "_", $f);
  	add_action("do_feed_".$f."_feed", "create_".$f."_feed", 10, 1);
  }

  add_filter('rewrite_rules_array','customise_feed_rules');
}

add_action('init', 'add_custom_feed');

And here is a sample of a RSS file:

<?php header("Content-Type: application/xml; charset=UTF-8"); echo '<?xml version="1.0" encoding="UTF-8"?>'; ?> 

<rss version="2.0"
	xmlns:content="https://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="https://wellformedweb.org/CommentAPI/"
	xmlns:dc="https://purl.org/dc/elements/1.1/"
	xmlns:atom="https://www.w3.org/2005/Atom"
	xmlns:sy="https://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="https://purl.org/rss/1.0/modules/slash/"
>

<channel>
    <title>TITLE</title>

    <atom:link href="<?php self_link(); ?>" rel="self" type="application/rss+xml" />
    <link><?php self_link(); ?></link>
    <description>WORDPRESS_DESCRIPTION</description>
    <language><?php bloginfo_rss( 'language' ); ?></language>

    <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', current_time('mysql', 1), false); ?></pubDate>
		<lastBuildDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('gmt'), false); ?></lastBuildDate>
		<sy:updatePeriod><?php echo apply_filters( 'rss_update_period', 'hourly' ); ?></sy:updatePeriod>
		<sy:updateFrequency><?php echo apply_filters( 'rss_update_frequency', '1' ); ?></sy:updateFrequency>

    <copyright>Copyright <?php echo mysql2date('Y', current_time('mysql', 1), false); ?>, Match&Fuse</copyright>
    <docs>https://blogs.law.harvard.edu/tech/rss</docs>

		<?php $articles = get_the_posts_list( array(
				"postype"	=>	'band',
				"limit"		=>	20,
				"sortby"	=>	'post_date_gmt'
			));
			https://www.matchandfuse.co.uk/feed/bands
		?>

    <?php foreach ($articles as $a): ?>
    <item>
			<title><?php echo htmlspecialchars($a["title"]) ?></title>
			<link><?php echo $a["permalink"] ?></link>
			<pubDate><?php echo date('D, d M Y H:i:s +0000', $a["post_date"]); ?></pubDate>
			<?php if (strlen($a["excerpt"]) >=5 ): ?>
				<description><![CDATA[<?php echo htmlspecialchars($a["excerpt"]) ?>]]></description>
			<?php else: ?>
				<description><![CDATA[<?php echo htmlspecialchars(my_excerpt($a["content"], 100 , "words", true  )) ?>]]></description>
			<?php endif; ?>
			<content:encoded><![CDATA[<?php echo htmlspecialchars(apply_filters( 'the_content', $a["content"] )) ?>]]></content:encoded>
		</item>

		<?php endforeach; ?>

	</channel>
</rss>

PS: I am using a home made query system apart from wordpress, but it is not supposed to have any influence over the thing!

I think the problem is related to the way i Call them…

The rss php files are there:
https://www.matchandfuse.co.uk/wp/wp-content/themes/matchfuse-v1.2/feeds

Thank you a lot…
Catherine