Conda返回“解决环境:失败”

我不能再使用Conda实用程序了。多年来我经常使用它,但最近,因为我安装了python模块 scp (用命令 conda install scp ,我不知道它是否重要)如果没有任何明显的异常,只要我使用conda(conda install,conda update,conda uninstall,,消息总是相同),就会得到下面的错误:

Solving environment: failed

# >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<

    Traceback (most recent call last):
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/exceptions.py", line 819, in __call__
        return func(*args, **kwargs)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/cli/main.py", line 78, in _main
        exit_code = do_call(args, p)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/cli/conda_argparse.py", line 77, in do_call
        exit_code = getattr(module, func_name)(args, parser)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/cli/main_update.py", line 14, in execute
        install(args, parser, 'update')
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/cli/install.py", line 235, in install
        force_reinstall=context.force,
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/solve.py", line 506, in solve_for_transaction
        force_remove, force_reinstall)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/solve.py", line 439, in solve_for_diff
        final_precs = self.solve_final_state(deps_modifier, prune, ignore_pinned, force_remove)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/solve.py", line 180, in solve_final_state
        index, r = self._prepare(prepared_specs)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/solve.py", line 580, in _prepare
        self.subdirs, prepared_specs)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/index.py", line 215, in get_reduced_index
        new_records = query_all(spec)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/index.py", line 184, in query_all
        return tuple(concat(future.result() for future in as_completed(futures)))
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/subdir_data.py", line 94, in query
        self.load()
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/subdir_data.py", line 148, in load
        _internal_state = self._load()
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/subdir_data.py", line 216, in _load
        mod_etag_headers.get('_mod'))
      File "/Users/steph/anaconda/lib/python3.5/site-packages/conda/core/subdir_data.py", line 416, in fetch_repodata_remote_request
        timeout=timeout)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/requests/sessions.py", line 501, in get
        return self.request('GET', url, **kwargs)
      File "/Users/steph/anaconda/lib/python3.5/site-packages/requests/sessions.py", line 479, in request
        prep.url, proxies, stream, verify, cert
      File "/Users/steph/anaconda/lib/python3.5/site-packages/requests/sessions.py", line 654, in merge_environment_settings
        env_proxies = get_environ_proxies(url) or {}
      File "/Users/steph/anaconda/lib/python3.5/site-packages/requests/utils.py", line 617, in get_environ_proxies
        if should_bypass_proxies(url):
    TypeError: should_bypass_proxies_patched() missing 1 required positional argument: 'no_proxy'

`$ /Users/steph/anaconda/bin/conda update conda`

  environment variables:
                 CIO_TEST=<not set>
                CLASSPATH=/Users/steph/workspace
               CONDA_ROOT=/Users/steph/anaconda
          LD_LIBRARY_PATH=/opt/local/lib:/opt/local/lib/gcc5:/usr/lib:/usr/local/lib:/Users/step
                          h/anaconda/pkgs/qt-4.8.7-1/lib
                     PATH=/Library/Frameworks/Python.framework/Versions/3.5/bin:/Library/Framewo
                          rks/Python.framework/Versions/3.6/bin:/opt/local/bin:/opt/local/sbin:.
                          :/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/Te
                          X/texbin:/Developer/usr/bin:/Users/steph/anaconda/bin
               PYTHONPATH=/Users/steph/python_work:/Users/steph/python_lib
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>

     active environment : None
       user config file : /Users/steph/.condarc
 populated config files : 
          conda version : 4.5.6
    conda-build version : 3.10.5
         python version : 3.5.5.final.0
       base environment : /Users/steph/anaconda  (writable)
           channel URLs : https://repo.anaconda.com/pkgs/main/osx-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/free/osx-64
                          https://repo.anaconda.com/pkgs/free/noarch
                          https://repo.anaconda.com/pkgs/r/osx-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/pro/osx-64
                          https://repo.anaconda.com/pkgs/pro/noarch
          package cache : /Users/steph/anaconda/pkgs
                          /Users/steph/.conda/pkgs
       envs directories : /Users/steph/anaconda/envs
                          /Users/steph/.conda/envs
               platform : osx-64
             user-agent : conda/4.5.6 requests/2.12.4 CPython/3.5.5 Darwin/15.6.0 OSX/10.11.6
                UID:GID : 504:20
             netrc file : None
           offline mode : False


An unexpected error has occurred. Conda has prepared the above report.
If submitted, this report will be used by core maintainers to improve
future releases of conda.
Would you like conda to send this report to the core maintainers?
…

我想看看我的 .condarc 文件,甚至删除了它,但它不会更改pb。你知道我该怎么做才能回到工作状态吗?