Warning: include(/homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/vendor/composer/../../lib/abstract-main.php): failed to open stream: No such file or directory in /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/download-monitor/vendor/composer/ClassLoader.php on line 444

Warning: include(): Failed opening '/homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/vendor/composer/../../lib/abstract-main.php' for inclusion (include_path='.:/usr/lib/php7.4') in /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/download-monitor/vendor/composer/ClassLoader.php on line 444

Fatal error: Uncaught Error: Class 'Yoast\WP\Lib\Abstract_Main' not found in /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/src/main.php:25 Stack trace: #0 /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/download-monitor/vendor/composer/ClassLoader.php(444): include() #1 /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/download-monitor/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/homepages/7/d2...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Yoast\\WP\\SEO\\Ma...') #3 /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/src/functions.php(35): spl_autoload_call('Yoast\\WP\\SEO\\Ma...') #4 /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/wp-seo-main.php(482): YoastSEO() #5 /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/wp-seo.php(50): require_o in /homepages/7/d22137477/htdocs/clickandbuilds/OptikerSchmalt/wp-content/plugins/wordpress-seo/src/main.php on line 25