Fatal error: Uncaught Error: Class 'WP_Themes_List_Table' not found in /home/ignas/public_html/ignas/wp-admin/includes/class-wp-theme-install-list-table.php:17 Stack trace: #0 {main} thrown in /home/ignas/public_html/ignas/wp-admin/includes/class-wp-theme-install-list-table.php on line 17