Fatal error: Uncaught Error: Call to undefined function __() in /var/www/html/wp-admin/includes/file.php:16 Stack trace: #0 /var/www/html/wp-content/object-cache.php(2312): require_once() #1 /var/www/html/wp-content/object-cache.php(587): WP_Object_Cache->delete_offending_files(2) #2 /var/www/html/wp-content/object-cache.php(433): WP_Object_Cache->open_connection() #3 /var/www/html/wp-content/object-cache.php(2360): WP_Object_Cache->__construct() #4 /var/www/html/wp-includes/load.php(856): wp_cache_init() #5 /var/www/html/wp-settings.php(131): wp_start_object_cache() #6 /var/www/html/wp-config.php(115): require_once('/var/www/html/w...') #7 /var/www/html/wp-load.php(50): require_once('/var/www/html/w...') #8 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...') #9 /var/www/html/index.php(17): require('/var/www/html/w...') #10 {main} thrown in /var/www/html/wp-admin/includes/file.php on line 16