Fatal error: Uncaught Error: Class 'WP_Upgrader_Skin' not found in /home/vafrditczt/www/agri/wp-admin/includes/class-language-pack-upgrader-skin.php:18
Stack trace:
#0 {main}
thrown in /home/vafrditczt/www/agri/wp-admin/includes/class-language-pack-upgrader-skin.php on line 18