Warning: include() [function.include]: Failed opening '/var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/vendor/composer/../../lib/abstract-main.php' for inclusion (include_path='.') in /var/www/hotchili.dk/kito.se/wp-content/plugins/one-click-demo-import/vendor/composer/ClassLoader.php on line 444

Fatal error: Uncaught Error: Class 'Yoast\WP\Lib\Abstract_Main' not found in /var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/src/main.php:25 Stack trace: #0 /var/www/hotchili.dk/kito.se/wp-content/plugins/one-click-demo-import/vendor/composer/ClassLoader.php(444): include() #1 /var/www/hotchili.dk/kito.se/wp-content/plugins/one-click-demo-import/vendor/composer/ClassLoader.php(322): Composer\Autoload\includeFile('/var/www/hotchi...') #2 [internal function]: Composer\Autoload\ClassLoader->loadClass('Yoast\\WP\\SEO\\Ma...') #3 /var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/src/functions.php(35): spl_autoload_call('Yoast\\WP\\SEO\\Ma...') #4 /var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/wp-seo-main.php(463): YoastSEO() #5 /var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/wp-seo.php(50): require_once('/var/www/hotchi...') #6 /var/www/hotchili.dk/kito.se/wp-settings.php(409): include_once('/var/www/hotchi...') #7 /var/www/hotchili.dk/kito.se/wp-config.php(93): require_on in /var/www/hotchili.dk/kito.se/wp-content/plugins/wordpress-seo/src/main.php on line 25