Fatal error: Uncaught Error: Call to undefined function wp_is_serving_rest_request() in /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php:574 Stack trace: #0 /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(484): Yoast\WP\SEO\Integrations\Front_End_Integration->maybe_remove_title_presenter(Array) #1 /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(440): Yoast\WP\SEO\Integrations\Front_End_Integration->get_needed_presenters('Post_Type') #2 /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(402): Yoast\WP\SEO\Integrations\Front_End_Integration->get_presenters('Post_Type', Object(Yoast\WP\SEO\Context\Meta_Tags_Context)) #3 /home/itshassu/blog.itshass.uk/wp-includes/class-wp-hook.php(324): Yoast\WP\SEO\Integrations\Front_End_Integration->present_head('') #4 /home/itshassu/blog.itshass.uk/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array) #5 /home/itshassu/blog.itshass.uk/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php(389): do_action('wpseo_head') #7 /home/itshassu/blog.itshass.uk/wp-includes/class-wp-hook.php(324): Yoast\WP\SEO\Integrations\Front_End_Integration->call_wpseo_head('') #8 /home/itshassu/blog.itshass.uk/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #9 /home/itshassu/blog.itshass.uk/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #10 /home/itshassu/blog.itshass.uk/wp-includes/general-template.php(3052): do_action('wp_head') #11 /home/itshassu/blog.itshass.uk/wp-includes/template-canvas.php(17): wp_head() #12 /home/itshassu/blog.itshass.uk/wp-includes/template-loader.php(106): include('/home/itshassu/...') #13 /home/itshassu/blog.itshass.uk/wp-blog-header.php(19): require_once('/home/itshassu/...') #14 /home/itshassu/blog.itshass.uk/index.php(17): require('/home/itshassu/...') #15 {main} thrown in /home/itshassu/blog.itshass.uk/wp-content/plugins/wordpress-seo/src/integrations/front-end-integration.php on line 574