jupyterlab中安装tensorboard lunch error Invalid response: 404 Not Found

1. conda install --yes 'jupyterlab=1.1.4' 'nodejs=10.16.3'

2. conda clean --all -ya

3. pip install --no-cache-dir jupyter-tensorboard

4. pip install --no-cache-dir tensorflow>=1.3

5. jupyter labextension install jupyterlab_tensorboard --no-build

6. jupyter serverextension enable jupyter_tensorboard --sys-prefix

Invalid response: 404 Not Found

github：https://github.com/chaoleili/jupyterlab_tensorboard/issues/5