Warning: include(/var/www/html/wp-content/plugins/wordpress-seo/vendor/composer/../../vendor_prefixed/ruckusing/lib/Task/Db/Migrate.php): failed to open stream: No such file or directory in /var/www/html/wp-content/plugins/the-events-calendar/vendor/composer/ClassLoader.php on line 444 Warning: include(): Failed opening '/var/www/html/wp-content/plugins/wordpress-seo/vendor/composer/../../vendor_prefixed/ruckusing/lib/Task/Db/Migrate.php' for inclusion (include_path='.:/usr/local/lib/php') in /var/www/html/wp-content/plugins/the-events-calendar/vendor/composer/ClassLoader.php on line 444 Fatal error: Uncaught Error: Class 'YoastSEO_Vendor\Task_Db_Migrate' not found in /var/www/html/wp-content/plugins/wordpress-seo/src/config/ruckusing-framework.php:85 Stack trace: #0 /var/www/html/wp-content/plugins/wordpress-seo/src/initializers/migration-runner.php(121): Yoast\WP\SEO\Config\Ruckusing_Framework->get_framework_task_manager(Object(Yoast\WP\Lib\Ruckusing_Adapter), 'wp_yoast_migrat...', '/var/www/html/w...') #1 /var/www/html/wp-content/plugins/wordpress-seo/src/initializers/migration-runner.php(78): Yoast\WP\SEO\Initializers\Migration_Runner->run_migrations('free', 'wp_yoast_migrat...', '/var/www/html/w...') #2 /var/www/html/wp-content/plugins/wordpress-seo/src/initializers/migration-runner.php(65): Yoast\WP\SEO\Initializers\Migration_Runner->run_free_migrations() #3 /var/www/html/wp-content/plugins/wordpress-seo/src/loader.php(151): Yoast\WP\SEO\Initializers\Migration_Runner->initialize() #4 /var/www/html/wp-content/plugins/wordpress-seo/src/loader.php(111): Yoast\WP\SEO\Loader->load_initializers() #5 /var/ in /var/www/html/wp-content/plugins/wordpress-seo/src/config/ruckusing-framework.php on line 85