Warning: include(/homepages/9/d340857968/htdocs/wp-content/plugins/wordpress-seo/vendor/composer/../../lib/abstract-main.php): failed to open stream: No such file or directory in /homepages/9/d340857968/htdocs/wp-content/plugins/wordpress-seo/vendor/composer/ClassLoader.php on line 571

Warning: include(): Failed opening '/homepages/9/d340857968/htdocs/wp-content/plugins/wordpress-seo/vendor/composer/../../lib/abstract-main.php' for inclusion (include_path='.:/usr/lib/php7.2') in /homepages/9/d340857968/htdocs/wp-content/plugins/wordpress-seo/vendor/composer/ClassLoader.php on line 571

Fatal error: Class 'Yoast\WP\Lib\Abstract_Main' not found in /homepages/9/d340857968/htdocs/wp-content/plugins/wordpress-seo/src/main.php on line 25