Jupyter notebook won't load on Google Chrome (Ubuntu system)

After the following command,
`sudo docker run jupyter/tensorflow-notebook`

the following output was generated:
```
Executing the command: jupyter notebook
[I 17:49:11.194 NotebookApp] Writing notebook server cookie secret to /home/jovyan/.local/share/jupyter/runtime/notebook_cookie_secret
[I 17:49:11.371 NotebookApp] JupyterLab extension loaded from /opt/conda/lib/python3.6/site-packages/jupyterlab
[I 17:49:11.371 NotebookApp] JupyterLab application directory is /opt/conda/share/jupyter/lab
[I 17:49:11.372 NotebookApp] Serving notebooks from local directory: /home/jovyan
[I 17:49:11.372 NotebookApp] The Jupyter Notebook is running at:
[I 17:49:11.372 NotebookApp] http://(81dd24e2a351 or 127.0.0.1):8888/?token=fdc76a9b29d42bbeaa6e99e606cfa99e8eea48d9ee3b3f14
[I 17:49:11.372 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 17:49:11.373 NotebookApp]

Copy/paste this URL into your browser when you connect for the first time,
to login with a token:
http://(81dd24e2a351 or 127.0.0.1):8888/?token=fdc76a9b29d42bbeaa6e99e606cfa99e8eea48d9ee3b3f14
```
I then tried entering the following address in my browswer,
http://127.0.0.1:8888/?token=fdc76a9b29d42bbeaa6e99e606cfa99e8eea48d9ee3b3f14
With the result:
--- This site can't be reached, 127.0.0.1 refused to connect

Any ideas? (This was my first attempt using Docker.)