Sage on Jupyter - socket error

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When I try to start sage with the Jupyter notebook, I get this error:

:~/work> sage -n jupyter
┌────────────────────────────────────────────────────────────────────┐
│ SageMath version 8.8, Release Date: 2019-06-26                     │
│ Using Python 2.7.15. Type "help()" for help.                       │
└────────────────────────────────────────────────────────────────────┘
Please wait while the Sage Jupyter Notebook server starts...
[I 13:23:55.592 NotebookApp] Using MathJax: nbextensions/mathjax/MathJax.js
[I 13:23:55.773 NotebookApp] Writing notebook server cookie secret to /run/user/1002/jupyter/notebook_cookie_secret
Traceback (most recent call last):
  File "/home/rllozes/sage-8.8/src/bin/sage-notebook", line 267, in <module>
    launcher(unknown)
  File "/home/rllozes/sage-8.8/src/bin/sage-notebook", line 99, in __init__
    main(argv)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/jupyter_core/application.py", line 266, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/traitlets/config/application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/traitlets/config/application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/notebook/notebookapp.py", line 1635, in initialize
    self.init_webapp()
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/notebook/notebookapp.py", line 1407, in init_webapp
    self.http_server.listen(port, self.ip)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/tornado/tcpserver.py", line 142, in listen
    sockets = bind_sockets(port, address=address)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/site-packages/tornado/netutil.py", line 197, in bind_sockets
    sock.bind(sockaddr)
  File "/home/rllozes/sage-8.8/local/lib/python2.7/socket.py", line 230, in meth
    return getattr(self._sock,name)(*args)

socket.error: [Errno 99] Cannot assign requested address

Any idea why I get a socket error?