title: Can't run jupyter notebook after installing
body: <p>I have been trying to run jupyter notebook through pycharm and cmd as well but I keep getting the following error and I wasn't able to find a solution for it. Is there anyone that knows how I fix this?</p>
  <pre><code>  File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\runpy.py&quot;, line 194, in _run_module_as_main
      return _run_code(code, main_globals, None,
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\runpy.py&quot;, line 87, in _run_code
      exec(code, run_globals)
    File &quot;C:\Users\31611\AppData\Local\Programs\Python\Python38\Scripts\jupyter-notebook.EXE\__main__.py&quot;, line 7, in &lt;module&gt;
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\jupyter_core\application.py&quot;, line 264, in launch_instance
      return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\traitlets\config\application.py&quot;, line 845, in launch_instance
      app.initialize(argv)
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\traitlets\config\application.py&quot;, line 88, in inner
      return method(app, *args, **kwargs)
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\notebook\notebookapp.py&quot;, line 2141, in initialize
      self._init_asyncio_patch()
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\notebook\notebookapp.py&quot;, line 2117, in _init_asyncio_patch
      nest_asyncio.apply()
    File &quot;c:\users\31611\appdata\local\programs\python\python38\lib\site-packages\nest_asyncio.py&quot;, line 14, in apply
      raise ValueError('Can\'t patch loop of type %s' % type(loop))
  ValueError: Can't patch loop of type &lt;class 'NoneType'&gt;
  </code></pre>