Fatal error: Cannot redeclare is_amp_endpoint() (previously declared in /www/htdocs/w017e691/email-marketing-klicktipp-online-kurs.de/wp-content/plugins/better-amp/includes/functions/core-functions.php:59) in /www/htdocs/w017e691/email-marketing-klicktipp-online-kurs.de/wp-content/plugins/accelerated-mobile-pages/includes/vendor/amp/includes/amp-helper-functions.php on line 45