ERROR EXCEPTION while throwing an error

PHP Code:

try
        {
            $this->connection = new AMQPStreamConnection(
                'localhost',
                5672,
                $this->config->user,
                $this->config->password,
            );
            $this->channel    = $this->connection->channel();
            $this->channel->queue_declare($this->config->reviewQueueName, false, false, false, false);
            $this->channel->queue_declare($this->config->emailQueueName, false, false, false, false);
            if (is_cli())
            {
                $this->commonLib->cliLog('Connected to rabbit MQ');
            }
        }
        catch (\Exception $e)
        {
            if (is_cli())
            {
                $this->commonLib->cliLog('FAILED: could not connect to MQ');
                $this->commonLib->cliLog("REASON: {$e->getMessage()}");
                log_message('error', $e->getMessage());
            }
            else
            {
                throw new \RuntimeException($e->getMessage(), $e->getCode());
            }
            exit();
        }

PHP Code:

throw new \RuntimeException($e->getMessage(), $e->getCode());