Tensorboard不会在图表中显示连接

Question

我运行示例https://github.com/tensorflow/tensorflow/blob/master/tensorflow/examples/tutorials/mnist/mnist_with_summaries.py，然后使用tensorboard --logdir /tmp/tensorflow/mnist/logs/mnist_with_summaries/打开tensorboard。但是，不显示连接，仅显示节点，就像附加的快照一样。