Fatal error: Uncaught Error: Class 'WP_Filesystem_Base' not found in /home/qwerasd1234/public_html/tom-test/wp-admin/includes/class-wp-filesystem-ftpsockets.php:16 Stack trace: #0 {main} thrown in /home/qwerasd1234/public_html/tom-test/wp-admin/includes/class-wp-filesystem-ftpsockets.php on line 16