Warning: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /www/wwwroot/xingkong/chathot.me/framework/class/db.class.php on line 55

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known' in /www/wwwroot/xingkong/chathot.me/framework/class/db.class.php:55 Stack trace: #0 /www/wwwroot/xingkong/chathot.me/framework/class/db.class.php(55): PDO->__construct('mysql:dbname=ma...', 'xingkong_test', 'S8FVu2i2tsKHNCh...', Array) #1 /www/wwwroot/xingkong/chathot.me/framework/class/db.class.php(25): DB->connect(Array) #2 /www/wwwroot/xingkong/chathot.me/framework/function/pdo.func.php(20): DB->__construct(Array) #3 /www/wwwroot/xingkong/chathot.me/framework/function/pdo.func.php(49): pdo() #4 /www/wwwroot/xingkong/chathot.me/framework/function/cache.memcache.func.php(37): pdo_get('core_cache', Array, Array) #5 /www/wwwroot/xingkong/chathot.me/framework/function/cache.func.php(31): cache_read('setting') #6 /www/wwwroot/xingkong/chathot.me/framework/model/setting.mod.php(35): cache_load('setting') #7 /www/wwwroot/xingkong/chathot.me/framework/bootstrap.inc.php(136) in /www/wwwroot/xingkong/chathot.me/framework/class/db.class.php on line 55