Fatal error: Uncaught mysqli_sql_exception: Connection refused in /www/wwwroot/api.meituapi.com/class/function.php:7 Stack trace: #0 /www/wwwroot/api.meituapi.com/class/function.php(7): mysqli_connect() #1 /www/wwwroot/api.meituapi.com/class/function.php(318): db() #2 /www/wwwroot/api.meituapi.com/index.php(10): get_num() #3 {main} thrown in /www/wwwroot/api.meituapi.com/class/function.php on line 7