Probable causes: You haven’t written any data to your event files. TensorBoard can’t find your event files. If you’re new to using TensorBoard, and want to find out how to add data and set up your event files, check out the README and perhaps the TensorBoard tutorial. If you think TensorBoard is configured properly, please see the section of the README devoted to missing data problems and consider filing an issue on GitHub.

这段话是指TensorBoard无法找到你的事件文件，可能的原因是你还没有向事件文件中写入任何数据。如果你是第一次使用TensorBoard，并且想了解如何添加数据和设置事件文件，请查看README文件和TensorBoard教程。如果你认为TensorBoard已经正确配置，请查看README文件中有关缺少数据问题的部分，并考虑在GitHub上提交一个问题报告。