Warning: mysqli_real_connect(): (HY000/2002): Connection refused in /web/yanwo/wp-includes/wp-db.php on line 1612

Fatal error: Uncaught Error: Call to undefined function wp_is_jsonp_request() in /web/yanwo/wp-includes/functions.php:3306 Stack trace: #0 /web/yanwo/wp-includes/wp-db.php(3378): wp_die('<p><code>Connec...') #1 /web/yanwo/wp-includes/wp-db.php(1679): wpdb->bail('<p><code>Connec...', 'db_connect_fail') #2 /web/yanwo/wp-includes/wp-db.php(639): wpdb->db_connect() #3 /web/yanwo/wp-includes/load.php(435): wpdb->__construct('root', 'll46114663$ABC', 'yanwo', 'localhost') #4 /web/yanwo/wp-settings.php(109): require_wp_db() #5 /web/yanwo/wp-config.php(101): require_once('/web/yanwo/wp-s...') #6 /web/yanwo/wp-load.php(37): require_once('/web/yanwo/wp-c...') #7 /web/yanwo/wp-blog-header.php(13): require_once('/web/yanwo/wp-l...') #8 /web/yanwo/index.php(17): require('/web/yanwo/wp-b...') #9 {main} thrown in /web/yanwo/wp-includes/functions.php on line 3306