I got Spawning server failed too. I used pip to installed packages. please remove them.
http://127.0.0.1:36707/jupyterhub/user/efa7895e-2474-4df4-b084-3dbcaf6318aa/[](http://127.0.0.1:36707/jupyterhub/user/efa7895e-2474-4df4-b084-3dbcaf6318aa/)