conda list returning run-time error Path not Found after installing PyTortch
Recently I tried to install Pytrotch using the command
    conda install pytorch torchvision cuda100 -c pytorch

To verity the package installed correctly I ran conda list in the anaconda prompt and got the following error:

RuntimeError: Path not found: C:\Users\[name]\AppData\Local\Continuum\Anaconda3\Lib\site-packages\Sphinx-1.5.6-py3.6.egg\EGG-INFO

I'm currently running conda version 4.6.1 and python version 3.6.7 on windows 10, I'd appreciate any  help in determining what caused this error and how it can be fixed so I can properly manage my anaconda packages.

Full stack trace:

Traceback (most recent call last):
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\exceptions.py", line 1001, in __call__
        return func(*args, **kwargs)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\cli\main.py", line 84, in _main
        exit_code = do_call(args, p)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 81, in do_call
        exit_code = getattr(module, func_name)(args, parser)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\cli\main_list.py", line 142, in execute
        show_channel_urls=context.show_channel_urls)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\cli\main_list.py", line 80, in print_packages
        show_channel_urls=show_channel_urls)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\cli\main_list.py", line 45, in list_packages
        installed = sorted(PrefixData(prefix, pip_interop_enabled=True).iter_records(),
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\core\prefix_data.py", line 116, in iter_records
        return itervalues(self._prefix_records)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\core\prefix_data.py", line 145, in _prefix_records
        return self.__prefix_records or self.load() or self.__prefix_records
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\core\prefix_data.py", line 69, in load
        self._load_site_packages()
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\core\prefix_data.py", line 258, in _load_site_packages
        python_record = read_python_record(self.prefix_path, af, python_pkg_record.version)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\gateways\disk\read.py", line 245, in read_python_record
        pydist = PythonDistribution.init(prefix_path, anchor_file, python_version)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\common\pkg_formats\python.py", line 90, in init
        return PythonEggInfoDistribution(anchor_full_path, python_version, sp_reference)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\common\pkg_formats\python.py", line 400, in __init__
        super(PythonEggInfoDistribution, self).__init__(anchor_full_path, python_version)
      File "C:\Users\[name]\AppData\Local\Continuum\Anaconda3\lib\site-packages\conda\common\pkg_formats\python.py", line 104, in __init__
        raise RuntimeError("Path not found: %s" % anchor_full_path)
    RuntimeError: Path not found: C:\Users\[name]\AppData\Local\Continuum\Anaconda3\Lib\site-packages\Sphinx-1.5.6-py3.6.egg\EGG-INFO


any help would be appreciated.

AS @P.Antoniadis said, this is an ongoing issue. And removing 'Sphinx-1.5.6-py3.6.egg' folder is the suggested workaround.

https://github.com/conda/conda/issues/8156#issuecomment-458777849
