Cannot modify header information - headers already sent by (output started at /home/forge/staging.aci.uk.net/web/app/plugins/seo-by-rank-math/vendor/mythemeshop/wordpress-helpers/src/class-notification.php:89) (500 Internal Server Error)

Exception

ErrorException

in /home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php (line 8)

* RSS2 Feed Template for displaying RSS2 Comments feed.
*
* @package WordPress
*/
header( 'Content-Type: ' . feed_content_type( 'rss2' ) . '; charset=' . get_option( 'blog_charset' ), true );
echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>';
/** This action is documented in wp-includes/feed-rss2.php */
do_action( 'rss_tag_pre', 'rss2-comments' );

in /home/forge/staging.aci.uk.net/vendor/roots/acorn/src/Roots/Acorn/Bootstrap/HandleExceptions.php -> handleError (line 54)

* @throws \ErrorException
*/
public function handleError($level, $message, $file = '', $line = 0, $context = [])
{
try {
parent::handleError($level, $message, $file, $line, $context);
} catch (Throwable $e) {
if (! apply_filters('acorn/throw_error_exception', true, $e)) {
return false;
}

HandleExceptions->handleError()

header() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php (line 8)

* RSS2 Feed Template for displaying RSS2 Comments feed.
*
* @package WordPress
*/
header( 'Content-Type: ' . feed_content_type( 'rss2' ) . '; charset=' . get_option( 'blog_charset' ), true );
echo '<?xml version="1.0" encoding="' . get_option( 'blog_charset' ) . '"?' . '>';
/** This action is documented in wp-includes/feed-rss2.php */
do_action( 'rss_tag_pre', 'rss2-comments' );

require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php') in /home/forge/staging.aci.uk.net/web/wp/wp-includes/template.php (line 770)

if ( isset( $s ) ) {
$s = esc_attr( $s );
}
if ( $require_once ) {
require_once $_template_file;
} else {
require $_template_file;
}
}

load_template() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php (line 1660)

*
* @param bool $for_comments True for the comment feed, false for normal feed.
*/
function do_feed_rss2( $for_comments ) {
if ( $for_comments ) {
load_template( ABSPATH . WPINC . '/feed-rss2-comments.php' );
} else {
load_template( ABSPATH . WPINC . '/feed-rss2.php' );
}
}

do_feed_rss2() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php (line 309)

if ( 0 == $the_['accepted_args'] ) {
$value = call_user_func( $the_['function'] );
} elseif ( $the_['accepted_args'] >= $num_args ) {
$value = call_user_func_array( $the_['function'], $args );
} else {
$value = call_user_func_array( $the_['function'], array_slice( $args, 0, (int) $the_['accepted_args'] ) );
}
}
} while ( false !== next( $this->iterations[ $nesting_level ] ) );
unset( $this->iterations[ $nesting_level ] );

WP_Hook->apply_filters() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php (line 331)

*
* @param array $args Parameters to pass to the callback functions.
*/
public function do_action( $args ) {
$this->doing_action = true;
$this->apply_filters( '', $args );
// If there are recursive calls to the current action, we haven't finished it until we get to the last one.
if ( ! $this->nesting_level ) {
$this->doing_action = false;
}

WP_Hook->do_action() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/plugin.php (line 476)

} elseif ( is_array( $arg[0] ) && 1 === count( $arg[0] ) && isset( $arg[0][0] ) && is_object( $arg[0][0] ) ) {
// Backward compatibility for PHP4-style passing of `array( &$this )` as action `$arg`.
$arg[0] = $arg[0][0];
}
$wp_filter[ $hook_name ]->do_action( $arg );
array_pop( $wp_current_filter );
}
/**

do_action() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php (line 1624)

* @since 4.4.0 The `$feed` parameter was added.
*
* @param bool $is_comment_feed Whether the feed is a comment feed.
* @param string $feed The feed name.
*/
do_action( "do_feed_{$feed}", $wp_query->is_comment_feed, $feed );
}
/**
* Load the RDF RSS 0.91 Feed template.
*

do_feed() in /home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php (line 48)

* @since 5.4.0
*/
do_action( 'do_favicon' );
return;
} elseif ( is_feed() ) {
do_feed();
return;
} elseif ( is_trackback() ) {
require ABSPATH . 'wp-trackback.php';
return;
}

require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php') in /home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php (line 19)

// Set up the WordPress query.
wp();
// Load the theme template.
require_once ABSPATH . WPINC . '/template-loader.php';
}

require('/home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php') in /home/forge/staging.aci.uk.net/web/index.php (line 6)

<?php
/**
* WordPress View Bootstrapper
*/
define('WP_USE_THEMES', true);
require __DIR__ . '/wp/wp-blog-header.php';

Stack Trace

ErrorException
ErrorException: Cannot modify header information - headers already sent by (output started at /home/forge/staging.aci.uk.net/web/app/plugins/seo-by-rank-math/vendor/mythemeshop/wordpress-helpers/src/class-notification.php:89) at /home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php:8 at Illuminate\Foundation\Bootstrap\HandleExceptions->handleError() (/home/forge/staging.aci.uk.net/vendor/roots/acorn/src/Roots/Acorn/Bootstrap/HandleExceptions.php:54) at Roots\Acorn\Bootstrap\HandleExceptions->handleError() at header() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php:8) at require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php') (/home/forge/staging.aci.uk.net/web/wp/wp-includes/template.php:770) at load_template() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php:1660) at do_feed_rss2() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php:309) at WP_Hook->apply_filters() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php:331) at WP_Hook->do_action() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/plugin.php:476) at do_action() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php:1624) at do_feed() (/home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php:48) at require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php') (/home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php:19) at require('/home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php') (/home/forge/staging.aci.uk.net/web/index.php:6)

ErrorException

ErrorException:
Cannot modify header information - headers already sent by (output started at /home/forge/staging.aci.uk.net/web/app/plugins/seo-by-rank-math/vendor/mythemeshop/wordpress-helpers/src/class-notification.php:89)

  at /home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php:8
  at Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
     (/home/forge/staging.aci.uk.net/vendor/roots/acorn/src/Roots/Acorn/Bootstrap/HandleExceptions.php:54)
  at Roots\Acorn\Bootstrap\HandleExceptions->handleError()
  at header()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php:8)
  at require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/feed-rss2-comments.php')
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/template.php:770)
  at load_template()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php:1660)
  at do_feed_rss2()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php:309)
  at WP_Hook->apply_filters()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/class-wp-hook.php:331)
  at WP_Hook->do_action()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/plugin.php:476)
  at do_action()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/functions.php:1624)
  at do_feed()
     (/home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php:48)
  at require_once('/home/forge/staging.aci.uk.net/web/wp/wp-includes/template-loader.php')
     (/home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php:19)
  at require('/home/forge/staging.aci.uk.net/web/wp/wp-blog-header.php')
     (/home/forge/staging.aci.uk.net/web/index.php:6)

Symfony Exception

ErrorException

HTTP 500 Internal Server Error

Cannot modify header information - headers already sent by (output started at /home/forge/staging.aci.uk.net/web/app/plugins/seo-by-rank-math/vendor/mythemeshop/wordpress-helpers/src/class-notification.php:89)

Exception

ErrorException

Stack Trace