报错：
ImportError: Something is wrong with the numpy installation. While importing we detected an older version of numpy in ['G:\\Anaconda3\\lib\\site-packages\\numpy']. One method of fixing this is to repeatedly uninstall numpy until none is found, then reinstall this version.
实际上和numpy没有关系
解决方案：
先activate tensorflow环境，再执行tensorboard --logdir=路径名
结果依然报错，因为没有对应的版本的tensorboard
File "G:\Anaconda3\envs\tfenv\Scripts\tensorboard-script.py", line 3, in <module>
import tensorflow.tensorboard.tensorboard
ImportError: No module named 'tensorflow.tensorboard'
最后解决方案：pip install tensorflow.tensorboard
然后再运行：
成功啦！