Warning: session_start(): Failed to read session data: user (path: ) in /var/www/vendor/zendframework/zend-session/src/SessionManager.php on line 138

Fatal error: Uncaught PDOException: PDO::__construct(): php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/vendor/zendframework/zend-db/src/Adapter/Driver/Pdo/Connection.php:271 Stack trace: #0 /var/www/vendor/zendframework/zend-db/src/Adapter/Driver/Pdo/Connection.php(271): PDO->__construct('mysql:dbname=de...', 'demo_sanar', 'RRB7(H.kuyb[Ir2...', Array) #1 /var/www/vendor/zendframework/zend-db/src/Adapter/Driver/Pdo/Pdo.php(255): Zend\Db\Adapter\Driver\Pdo\Connection->connect() #2 /var/www/vendor/zendframework/zend-db/src/Sql/Sql.php(138): Zend\Db\Adapter\Driver\Pdo\Pdo->createStatement() #3 /var/www/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php(239): Zend\Db\Sql\Sql->prepareStatementForSqlObject(Object(Zend\Db\Sql\Select)) #4 /var/www/vendor/zendframework/zend-db/src/TableGateway/AbstractTableGateway.php(208): Zend\Db\TableGateway\AbstractTableGateway->executeSelect(Object(Zend\Db\Sql\Select)) #5 /var/www/vendor/zendframework/zend-db/src/TableGateway/AbstractTab in /var/www/vendor/zendframework/zend-db/src/Adapter/Driver/Pdo/Connection.php on line 282