conda安装失败，pip正常安装

华东交通大学电气工程硕士

问题：jupyter lab 安装插件时候需要先安装nodejs ^[1] ，但今天总算安装失败，报错如下：

An unexpected error has occurred. Conda has prepared the above report.

 >>>>>>>>>>>>>>>>>>>>>> ERROR REPORT <<<<<<<<<<<<<<<<<<<<<<
    Traceback (most recent call last):
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\exceptions.py", line 1079, in __call__
        return func(*args, **kwargs)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\cli\main.py", line 84, in _main
        exit_code = do_call(args, p)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\cli\conda_argparse.py", line 83, in do_call
        return getattr(module, func_name)(args, parser)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\cli\main_create.py", line 41, in execute
        install(args, parser, 'create')
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\cli\install.py", line 261, in install
        unlink_link_transaction = solver.solve_for_transaction(
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\solve.py", line 123, in solve_for_transaction
        self._notify_conda_outdated(link_precs)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\solve.py", line 970, in _notify_conda_outdated
        SubdirData.query_all(conda_newer_spec, self.channels, self.subdirs,
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 140, in query_all
        result = tuple(concat(executor.map(subdir_query, channel_urls)))
      File "C:\Users\pc\anaconda3\lib\concurrent\futures\_base.py", line 611, in result_iterator
        yield fs.pop().result()
      File "C:\Users\pc\anaconda3\lib\concurrent\futures\_base.py", line 432, in result
        return self.__get_result()
      File "C:\Users\pc\anaconda3\lib\concurrent\futures\_base.py", line 388, in __get_result
        raise self._exception
      File "C:\Users\pc\anaconda3\lib\concurrent\futures\thread.py", line 57, in run
        result = self.fn(*self.args, **self.kwargs)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 132, in <lambda>
        subdir_query = lambda url: tuple(SubdirData(Channel(url), repodata_fn=repodata_fn).query(
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 145, in query
        self.load()
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 209, in load
        _internal_state = self._load()
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 403, in _load
        _internal_state = self._process_raw_repodata_str(raw_repodata_str)
      File "C:\Users\pc\anaconda3\lib\site-packages\conda\core\subdir_data.py", line 476, in _process_raw_repodata_str
        json_obj = json.loads(raw_repodata_str or '{}')
      File "C:\Users\pc\anaconda3\lib\json\__init__.py", line 357, in loads
        return _default_decoder.decode(s)
      File "C:\Users\pc\anaconda3\lib\json\decoder.py", line 337, in decode
        obj, end = self.raw_decode(s, idx=_w(s, 0).end())
      File "C:\Users\pc\anaconda3\lib\json\decoder.py", line 353, in raw_decode
        obj, end = self.scan_once(s, idx)
    json.decoder.JSONDecodeError: Expecting property name enclosed in double quotes: line 1 column 47 (char 46)
`$ C:\Users\pc\anaconda3\Scripts\conda-script.py create --name base20210826`
  environment variables:
                 CIO_TEST=<not set>
        CONDA_DEFAULT_ENV=base
                CONDA_EXE=C:\Users\pc\anaconda3\condabin\..\Scripts\conda.exe
               CONDA_EXES="C:\Users\pc\anaconda3\condabin\..\Scripts\conda.exe"
             CONDA_PREFIX=C:\Users\pc\anaconda3
    CONDA_PROMPT_MODIFIER=(base)
         CONDA_PYTHON_EXE=C:\Users\pc\anaconda3\python.exe
               CONDA_ROOT=C:\Users\pc\anaconda3
              CONDA_SHLVL=1
                CUDA_PATH=C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2
           CURL_CA_BUNDLE=<not set>
                 HOMEPATH=\Users\pc
          NVTOOLSEXT_PATH=C:\Program Files\NVIDIA Corporation\NvToolsExt\
                     PATH=C:\Users\pc\anaconda3;C:\Users\pc\anaconda3\Library\mingw-w64\bin;C:\U
                          sers\pc\anaconda3\Library\usr\bin;C:\Users\pc\anaconda3\Library\bin;C:
                          \Users\pc\anaconda3\Scripts;C:\Users\pc\anaconda3\bin;C:\Users\pc\anac
                          onda3;C:\Users\pc\anaconda3\Library\mingw-w64\bin;C:\Users\pc\anaconda
                          3\Library\usr\bin;C:\Users\pc\anaconda3\Library\bin;C:\Users\pc\anacon
                          da3\Scripts;C:\Users\pc\anaconda3\bin;C:\Users\pc\anaconda3\condabin;C
                          :\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program
                          Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2\bin;C:\Program
                          Files\NVIDIA GPU Computing Toolkit\CUDA\v10.2\libnvvp;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\opl\bin\x64_win64;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\opl\oplide;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\cplex\bin\x64_win64;C:\Program Files\IB
                          M\ILOG\CPLEX_Studio129\cpoptimizer\bin\x64_win64;D:\gurobi811\win64\bi
                          n;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\S
                          ystem32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program
                          Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program
                          Files\dotnet;C:\Program Files\MATLAB\R2016a\runtime\win64;C:\Program
                          Files\MATLAB\R2016a\bin;C:\Program
                          Files\MATLAB\R2016a\polyspace\bin;c:\Program Files (x86)\Microsoft SQL
                          Server\100\Tools\Binn;c:\Program Files\Microsoft SQL
                          Server\100\Tools\Binn;c:\Program Files\Microsoft SQL
                          Server\100\DTS\Binn;C:\Program Files\Microsoft SQL
                          Server\130\Tools\Binn;C:\Users\pc\.dnx\bin;C:\Program Files\Microsoft
                          DNX\Dnvm;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WI
                          NDOWS\System32\WindowsPowerShell\v1.0;C:\WINDOWS\System32\OpenSSH;C:\U
                          sers\pc\Anaconda3\Scripts;C:\Program Files\Git\cmd;C:\Program
                          Files\NVIDIA Corporation\Nsight Compute 2019.5.0;C:\Program
                          Files\NVIDIA Corporation\NVIDIA
                          NvDLISR;C:\mysql-5.7.21-winx64\bin;C;C:\Program Files\doxygen\bin;C:\U
                          sers\pc\Anaconda3;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\W
                          bem;C:\WINDOWS\System32\WindowsPowerShell\v1.0;C:\WINDOWS\System32\Ope
                          nSSH;C:\Users\pc\anaconda3;C:\Users\pc\anaconda3\Library\mingw-w64\bin
                          ;C:\Users\pc\anaconda3\Library\usr\bin;C:\Users\pc\anaconda3\Library\b
                          in;C:\Users\pc\anaconda3\Scripts;C:\Program Files (x86)\Common
                          Files\Oracle\Java\javapath;C:\Program Files\NVIDIA GPU Computing
                          Toolkit\CUDA\v10.2\bin;C:\Program Files\NVIDIA GPU Computing
                          Toolkit\CUDA\v10.2\libnvvp;C:\Program Files (x86)\NetSarang\Xshell
                          6;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\opl\bin\x64_win64;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\opl\oplide;C:\Program
                          Files\IBM\ILOG\CPLEX_Studio129\cplex\bin\x64_win64;C:\Program Files\IB
                          M\ILOG\CPLEX_Studio129\cpoptimizer\bin\x64_win64;D:\gurobi811\win64\bi
                          n;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\S
                          ystem32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program
                          Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program
                          Files\dotnet;C:\Program Files\MATLAB\R2016a\runtime\win64;C:\Program
                          Files\MATLAB\R2016a\bin;C:\Program
                          Files\MATLAB\R2016a\polyspace\bin;c:\Program Files (x86)\Microsoft SQL
                          Server\100\Tools\Binn;c:\Program Files\Microsoft SQL
                          Server\100\Tools\Binn;c:\Program Files\Microsoft SQL
                          Server\100\DTS\Binn;C:\Program Files\Microsoft
                          SQL;C:\Users\pc\AppData\Local\Programs\Microsoft VS Code\bin;C:\mingw6
                          4\bin;C:\cmake-3.19.1-win64-x64\bin;C:\Users\pc\AppData\Local\Microsof
                          t\WindowsApps
             PSMODULEPATH=C:\Program Files\WindowsPowerShell\Modules;C:\WINDOWS\system32\Windows
                          PowerShell\v1.0\Modules
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>
     active environment : base
    active env location : C:\Users\pc\anaconda3
            shell level : 1
       user config file : C:\Users\pc\.condarc
 populated config files : C:\Users\pc\.condarc
          conda version : 4.10.1
    conda-build version : 3.21.4
         python version : 3.8.8.final.0
       virtual packages : __cuda=10.2=0
                          __win=0=0
                          __archspec=1=x86_64
       base environment : C:\Users\pc\anaconda3  (writable)
      conda av data dir : C:\Users\pc\anaconda3\etc\conda
  conda av metadata url : https://repo.anaconda.com/pkgs/main
           channel URLs : https://conda.anaconda.org/win-64
                          https://conda.anaconda.org/noarch
                          https://anaconda.org/win-64
                          https://anaconda.org/noarch
                          http://conda.anaconda.org/gurobi/win-64
                          http://conda.anaconda.org/gurobi/noarch
                          https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
                          https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
          package cache : C:\Users\pc\anaconda3\pkgs
                          C:\Users\pc\.conda\pkgs
                          C:\Users\pc\AppData\Local\conda\conda\pkgs
       envs directories : C:\Users\pc\anaconda3\envs
                          C:\Users\pc\.conda\envs
                          C:\Users\pc\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/4.10.1 requests/2.25.1 CPython/3.8.8 Windows/10 Windows/10.0.19041
          administrator : False
             netrc file : None
           offline mode : False
An unexpected error has occurred. Conda has prepared the above report.
Upload successful.

尝试了很多，网上的策略，包括从新安装anaconda都没有用。

最后发现这个有用：

就是把.condarc的文件删掉（我是改变了这个文件的名字为.condarc111）

这个文件的内容我修改过，当初安装gurobi的时候：

ssl_verify: true
channels:
  - https://conda.anaconda.org/