Warning: include(/var/www/d/e/debetho.nl/docs/wp-content/plugins/wordpress-seo/vendor/composer/../../frontend/class-frontend.php): failed to open stream: No such file or directory in /var/www/d/e/debetho.nl/docs/wp-content/plugins/wordpress-seo/vendor/composer/ClassLoader.php on line 444

Warning: include(): Failed opening '/var/www/d/e/debetho.nl/docs/wp-content/plugins/wordpress-seo/vendor/composer/../../frontend/class-frontend.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /var/www/d/e/debetho.nl/docs/wp-content/plugins/wordpress-seo/vendor/composer/ClassLoader.php on line 444

Fatal error: Class 'WPSEO_Frontend' not found in /var/www/d/e/debetho.nl/docs/wp-content/plugins/wordpress-seo/inc/wpseo-functions.php on line 19