Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Try again in /var/www/www.xjpzf.com/vendor/opis/database/src/Connection.php:291 Stack trace: #0 /var/www/www.xjpzf.com/vendor/opis/database/src/Connection.php(291): PDO->__construct('mysql:host=rm-u...', 'root', 'jiaowai@Rds#yu', Array) #1 /var/www/www.xjpzf.com/vendor/opis/database/src/Connection.php(263): Opis\Database\Connection->getPDO() #2 /var/www/www.xjpzf.com/vendor/opis/database/src/Connection.php(309): Opis\Database\Connection->getDriver() #3 /var/www/www.xjpzf.com/vendor/opis/database/src/SQL/Select.php(49): Opis\Database\Connection->getCompiler() #4 /var/www/www.xjpzf.com/src/Model/RentHouse.php(285): Opis\Database\SQL\Select->select(Object(Opis\Database\SQL\Expression)) #5 /var/www/www.xjpzf.com/src/Contrl/ListContrl.php(35): App\Model\RentHouse->getList(Array, 35, 20) #6 /var/www/www.xjpzf.com/src/Core/Init.php(42): App\Contrl\ListContrl->index() #7 /var/www/www.xjpzf.com/public/index.php(43): App\Core\Init- in /var/www/www.xjpzf.com/vendor/opis/database/src/Connection.php on line 291