Fatal error: Uncaught exception 'MongoConnectionException' with message 'Failed to connect to: localhost:27017: Previous connection attempts failed, server blacklisted' in /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php:285 Stack trace: #0 /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php(285): MongoClient->__construct('mongodb://local...', Array) #1 /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php(430): Doctrine\MongoDB\Connection->Doctrine\MongoDB\{closure}() #2 /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php(286): Doctrine\MongoDB\Connection->retry(Object(Closure)) #3 /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php(361): Doctrine\MongoDB\Connection->initialize() #4 /var/www/serena05/zend2/vendor/doctrine/mongodb-odm/lib/Doctrine/ODM/MongoDB/DocumentManager.php(306): Doctrine\MongoDB\Connection->selectDatabase('doctrine') #5 /var/www/serena05/zen in /var/www/serena05/zend2/vendor/doctrine/mongodb/lib/Doctrine/MongoDB/Connection.php on line 285