Warning: Constant ROOT already defined in /www/wwwroot/wangmai/app/config.php on line 4

Fatal error: Uncaught PDOException: SQLSTATE[HY000] [14] unable to open database file in /www/wwwroot/wangmai/app/db.php:14 Stack trace: #0 /www/wwwroot/wangmai/app/db.php(14): PDO->__construct() #1 /www/wwwroot/wangmai/app/db.php(158): db() #2 /www/wwwroot/wangmai/app/db.php(170): q() #3 /www/wwwroot/wangmai/app/db.php(176): one() #4 /www/wwwroot/wangmai/index.php(6): val() #5 {main} thrown in /www/wwwroot/wangmai/app/db.php on line 14