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python - Jupyter on EC2: SSL Error

I'm trying to serve a Jupyter notebook from EC2 but I'm getting an SSL error. I'm using this AMI: TensorFlow GPU - @nottombrown (ami-8ed4d0e4). I used a self-signed certificate and that might be part of the problem.

I've looked at several other SO posts that have a similar error such as this, this and this, but they're getting the error in a quite different context and I can't figure out how to get the solutions (such as setting verify=False) to work for me.

[E 15:52:44.954 NotebookApp] Exception in callback (<socket._socketobject object at 0x7f5f993dad00>, <function null_wrapper at 0x7f5f99319758>)
    Traceback (most recent call last):
      File "/usr/local/lib/python2.7/dist-packages/tornado/ioloop.py", line 883, in start
        handler_func(fd_obj, events)
      File "/usr/local/lib/python2.7/dist-packages/tornado/stack_context.py", line 275, in null_wrapper
        return fn(*args, **kwargs)
      File "/usr/local/lib/python2.7/dist-packages/tornado/netutil.py", line 274, in accept_handler
        callback(connection, address)
      File "/usr/local/lib/python2.7/dist-packages/tornado/tcpserver.py", line 239, in _handle_connection
        do_handshake_on_connect=False)
      File "/usr/local/lib/python2.7/dist-packages/tornado/netutil.py", line 521, in ssl_wrap_socket
        return ssl.wrap_socket(socket, **dict(context, **kwargs))
      File "/usr/lib/python2.7/ssl.py", line 487, in wrap_socket
        ciphers=ciphers)
      File "/usr/lib/python2.7/ssl.py", line 241, in __init__
        ciphers)
    SSLError: [Errno 336265225] _ssl.c:355: error:140B0009:SSL routines:SSL_CTX_use_PrivateKey_file:PEM lib
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Try to add https:// to force web browser to use HTTPS-connection.

I got:

[W 08:25:56.148 NotebookApp] SSL Error on 9 ('<jupyter-server-ip>', 62862): [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:590)

because Chrome tried to use HTTP connection. When using

https://<jupyter-server-ip> 

it finally works :)


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