closing_ipynb_tab

[watersoup]

Description

What steps will reproduce the problem?

problem while closing the .ipynb file using the "cross" on the tab.

Traceback

  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\urllib3\connectionpool.py", line 594, in urlopen
    self._prepare_proxy(conn)
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\urllib3\connectionpool.py", line 805, in _prepare_proxy
    conn.connect()
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\urllib3\connection.py", line 308, in connect
    self._tunnel()
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\http\client.py", line 911, in _tunnel
    message.strip()))
OSError: Tunnel connection failed: 403 Forbidden

Traceback (most recent call last):
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\adapters.py", line 449, in send
    timeout=timeout
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\urllib3\connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\urllib3\util\retry.py", line 399, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='204.40.194.129', port=3128): Max retries exceeded with url: http://localhost:8888/api/sessions?token=55b223c8477a12ffcd7a2d5fdbda61562a303763eff2a61b (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 403 Forbidden')))

Traceback (most recent call last):
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\spyder_notebook\notebookplugin.py", line 387, in close_client
    client.shutdown_kernel()
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\spyder_notebook\widgets\client.py", line 255, in shutdown_kernel
    kernel_id = self.get_kernel_id()
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\spyder_notebook\widgets\client.py", line 239, in get_kernel_id
    sessions_req = requests.get(sessions_url).content.decode()
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\api.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "C:\Users\RangrejJa\AppData\Local\Continuum\anaconda2\envs\py_35\lib\site-packages\requests\adapters.py", line 510, in send
    raise ProxyError(e, request=request)
requests.exceptions.ProxyError: HTTPSConnectionPool(host='204.40.194.129', port=3128): Max retries exceeded with url: http://localhost:8888/api/sessions?token=55b223c8477a12ffcd7a2d5fdbda61562a303763eff2a61b (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 403 Forbidden')))
WARNING:spyder.widgets.github.backend:failed to send bug report on github. response={'code': 401, 'json': {'message': 'Bad credentials', 'documentation_url': 'https://developer.github.com/v3'}}

Versions

• Spyder version: 4.0.0b1
• Python version: 3.7.3
• Qt version: 5.9.6
• PyQt5 version: 5.9.2
• Operating System: Windows 10

Dependencies

pyflakes >=0.6.0  :  2.1.1 (OK)
pycodestyle >=2.3 :  2.5.0 (OK)
pygments >=2.0    :  2.4.2 (OK)
sphinx >=0.6.6    :  2.1.1 (OK)
rope >=0.9.4      :  0.14.0 (OK)
jedi >=0.11.0     :  0.13.3 (OK)
nbconvert >=4.0   :  5.5.0 (OK)
pandas >=0.13.1   :  0.24.2 (OK)
numpy >=1.7       :  1.16.4 (OK)
sympy >=0.7.3     :  None (NOK)
cython >=0.21     :  None (NOK)
qtconsole >=4.2.0 :  4.5.1 (OK)
IPython >=4.0     :  7.5.0 (OK)
matplotlib >=2.0.0:  3.1.0 (OK)
pylint >=0.25     :  2.3.1 (OK)