错误：TensorBoard logging requires TensorBoard version 1.15 or above

错误：raise importError('TensorBoard logging requires TensorBoard version 1.15 or above')
importError: TensorBoard logging requires TensorBoard version 1.15 or above

检查：

from tensorboard import version
print(version.VERSION)

输出：1.14.0xxx

原因：已安装了1.15.0的tensorboard，但显示的是tb-nightly版本

解决：

pip uninstall tb-nightly
pip install tensorboard==1.15.0  -i https://pypi.tuna.tsinghua.edu.cn/simple

参考：
简单解决 TensorBoard logging requires TensorBoard version 1.15 or above | 码农家园