Fatal error: Uncaught Error: Call to undefined function wp_doing_ajax() in /kunden/280475_47051/rp-hosting/00127/12/2017/wp-content/plugins/wordpress-seo/wp-seo-main.php:315 Stack trace: #0 /kunden/280475_47051/rp-hosting/00127/12/2017/wp-includes/plugin.php(525): wpseo_init('') #1 /kunden/280475_47051/rp-hosting/00127/12/2017/wp-settings.php(276): do_action('plugins_loaded') #2 /kunden/280475_47051/rp-hosting/00127/12/2017/wp-config.php(115): require_once('/kunden/280475_...') #3 /kunden/280475_47051/rp-hosting/00127/12/2017/wp-load.php(37): require_once('/kunden/280475_...') #4 /kunden/280475_47051/rp-hosting/00127/12/2017/wp-blog-header.php(12): require_once('/kunden/280475_...') #5 /kunden/280475_47051/rp-hosting/00127/12/2017/index.php(17): require('/kunden/280475_...') #6 {main} thrown in /kunden/280475_47051/rp-hosting/00127/12/2017/wp-content/plugins/wordpress-seo/wp-seo-main.php on line 315