Doctrine\DBAL\Connection::errorInfo PHP Method

    public function errorInfo()
    {
        $this->connect();
        return $this->_conn->errorInfo();
    }

 private function connectDatabase(OutputInterface $output)
 {
     $param = array();
     $param['host'] = $this->dialog->ask($output, '<question>Where is your database server? [localhost]</question> ', 'localhost');
     $param['user'] = $this->dialog->ask($output, '<question>What is your database username? [root]</question> ', 'root');
     $param['password'] = $this->dialog->ask($output, '<question>What is your database password?</question> ', '');
     $param['driver'] = 'pdo_mysql';
     // Save dbName for later use to create database
     $this->dbName = $this->dialog->ask($output, '<question>What is your database name? [BungaWire]</question> ', 'BungaWire');
     $output->writeln('');
     // Write empty line for easy read
     $config = new Configuration();
     $this->dbConnection = DriverManager::getConnection($param, $config);
     $this->dbConnection->connect();
     if ($this->dbConnection->isConnected() === false) {
         $output->writeln('Database connection failed, please check your setting');
         $output->writeln('You connection configuration is:');
         $output->writeln('host: ' . $param['host']);
         $output->writeln('user: '******'user']);
         $output->writeln('password: '******'password']);
         $output->writeln('Database Name: ' . $param['dbname']);
         $output->writeln('Driver: ' . $param['driver']);
         $output->writeln($this->dbConnection->errorInfo());
         $output->writeln('Please try again!');
         $this->connectDatabase($output);
     } else {
         $output->writeln('Database connected!');
     }
 }