Fatal error: Uncaught PDOException: SQLSTATE[08006] [7] could not fork new process for connection: Resource temporarily unavailable could not fork new process for connection: Resource temporarily unavailable in /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php:43 Stack trace: #0 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php(43): PDO->__construct('pgsql:host=db;p...', 'root', '123123123', Array) #1 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOPgSql/Driver.php(45): Doctrine\DBAL\Driver\PDOConnection->__construct('pgsql:host=db;p...', 'root', 123123123, Array) #2 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(372): Doctrine\DBAL\Driver\PDOPgSql\Driver->connect(Array, 'root', 123123123, Array) #3 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(432): Doctrine\DBAL\Connection->connect() #4 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(396): Doctrine\DBAL\Connection->getDatabasePlatformVersion() #5 /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/ in /app/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php on line 89