This question took me a long time, the Internet to find a lot of blog, tried useless, ultimately, the tensorboard and tensorflow unloading heavy equipment, or find an error. After \ Program Files \ ANACONDA \ envs \ tensorflow \ Lib \ site-packages (I installed in the virtual environment) as well as tensorboard file folder residues, pip list: After uninstalling found again, though uninstalled tensorboard and tensorflow, but D not tensorboard, delete the file, reinstall tensorflow (tensorboard will be installed at the same time), the problem is solved.
