【报错解决】An unexpected error has occurred. Conda has prepared the above report.

(FairMOT) volley3@GDEA:~$ conda install pytorch==1.7.0 torchvision==0.8.0 cudatoolkit=10.2 -c pytorch
Collecting package metadata (current_repodata.json): failed

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

    Traceback (most recent call last):
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/exceptions.py", line 1125, in __call__
        return func(*args, **kwargs)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/cli/main.py", line 86, in main_subshell
        exit_code = do_call(args, p)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/cli/conda_argparse.py", line 93, in do_call
        return getattr(module, func_name)(args, parser)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/notices/core.py", line 72, in wrapper
        return_value = func(*args, **kwargs)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/cli/main_install.py", line 22, in execute
        install(args, parser, 'install')
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/cli/install.py", line 256, in install
        unlink_link_transaction = solver.solve_for_transaction(
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/solve.py", line 152, in solve_for_transaction
        unlink_precs, link_precs = self.solve_for_diff(update_modifier, deps_modifier,
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/solve.py", line 195, in solve_for_diff
        final_precs = self.solve_final_state(update_modifier, deps_modifier, prune, ignore_pinned,
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/solve.py", line 300, in solve_final_state
        ssc = self._collect_all_metadata(ssc)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/common/io.py", line 86, in decorated
        return f(*args, **kwds)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/solve.py", line 463, in _collect_all_metadata
        index, r = self._prepare(prepared_specs)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/solve.py", line 1057, in _prepare
        reduced_index = get_reduced_index(self.prefix, self.channels,
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/index.py", line 297, in get_reduced_index
        new_records = SubdirData.query_all(spec, channels=channels, subdirs=subdirs,
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 152, in query_all
        result = tuple(concat(executor.map(subdir_query, channel_urls)))
      File "/home/volley3/anaconda3/lib/python3.9/concurrent/futures/_base.py", line 609, in result_iterator
        yield fs.pop().result()
      File "/home/volley3/anaconda3/lib/python3.9/concurrent/futures/_base.py", line 446, in result
        return self.__get_result()
      File "/home/volley3/anaconda3/lib/python3.9/concurrent/futures/_base.py", line 391, in __get_result
        raise self._exception
      File "/home/volley3/anaconda3/lib/python3.9/concurrent/futures/thread.py", line 58, in run
        result = self.fn(*self.args, **self.kwargs)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 144, in <lambda>
        subdir_query = lambda url: tuple(SubdirData(Channel(url), repodata_fn=repodata_fn).query(
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 157, in query
        self.load()
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 222, in load
        _internal_state = self._load()
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 419, in _load
        _internal_state = self._process_raw_repodata_str(raw_repodata_str)
      File "/home/volley3/anaconda3/lib/python3.9/site-packages/conda/core/subdir_data.py", line 492, in _process_raw_repodata_str
        json_obj = json.loads(raw_repodata_str or '{}')
      File "/home/volley3/anaconda3/lib/python3.9/json/__init__.py", line 346, in loads
        return _default_decoder.decode(s)
      File "/home/volley3/anaconda3/lib/python3.9/json/decoder.py", line 337, in decode
        obj, end = self.raw_decode(s, idx=_w(s, 0).end())
      File "/home/volley3/anaconda3/lib/python3.9/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 77 (char 76)

`$ /home/volley3/anaconda3/bin/conda install pytorch==1.7.0 torchvision==0.8.0 cudatoolkit=10.2 -c pytorch`

  environment variables:
                 CIO_TEST=<not set>
        CONDA_DEFAULT_ENV=FairMOT
                CONDA_EXE=/home/volley3/anaconda3/bin/conda
             CONDA_PREFIX=/home/volley3/anaconda3/envs/FairMOT
           CONDA_PREFIX_1=/home/volley3/anaconda3
    CONDA_PROMPT_MODIFIER=(FairMOT)
         CONDA_PYTHON_EXE=/home/volley3/anaconda3/bin/python
               CONDA_ROOT=/home/volley3/anaconda3
              CONDA_SHLVL=2
           CURL_CA_BUNDLE=<not set>
          LD_LIBRARY_PATH=/usr/local/cuda-11.3/lib64:/usr/loca/cuda-11.6/lib64
                     PATH=/home/volley3/anaconda3/bin:/home/volley3/.local/bin:/usr/local/cuda-1
                          1.3/bin:/home/volley3/anaconda3/envs/FairMOT/bin:/home/volley3/anacond
                          a3/condabin:/usr/local/cuda-11.6/bin:/usr/local/sbin:/usr/local/bin:/u
                          sr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/hom
                          e/volley3/anaconda3/bin
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>

     active environment : FairMOT
    active env location : /home/volley3/anaconda3/envs/FairMOT
            shell level : 2
       user config file : /home/volley3/.condarc
 populated config files : /home/volley3/.condarc
          conda version : 4.14.0
    conda-build version : 3.21.8
         python version : 3.9.12.final.0
       virtual packages : __cuda=11.4=0
                          __linux=5.15.0=0
                          __glibc=2.31=0
                          __unix=0=0
                          __archspec=1=x86_64
       base environment : /home/volley3/anaconda3  (writable)
      conda av data dir : /home/volley3/anaconda3/etc/conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/pytorch/linux-64
                          https://conda.anaconda.org/pytorch/noarch
                          https://mirrors.ustc.edu.cn/anaconda/pkgs/free/linux-64
                          https://mirrors.ustc.edu.cn/anaconda/pkgs/free/noarch
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/pkgs/free/linux-64
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/pkgs/free/noarch
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/cloud/conda-forge/linux-64
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/cloud/conda-forge/noarch
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/cloud/msys2/free/linux-64
                          http://mirrors.tuna.tsinghua.esu.cn/anaconda/cloud/msys2/free/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /home/volley3/anaconda3/pkgs
                          /home/volley3/.conda/pkgs
       envs directories : /home/volley3/anaconda3/envs
                          /home/volley3/.conda/envs
               platform : linux-64
             user-agent : conda/4.14.0 requests/2.27.1 CPython/3.9.12 Linux/5.15.0-48-generic ubuntu/20.04.4 glibc/2.31
                UID:GID : 1003:1003
             netrc file : None
           offline mode : False


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

解决方法：

①查看是否存在conda文件

conda config --show-sources

如果显示结果如下，则表明根目录下生成了.condarc文件

②删除condarc文件

rm -rf ~/.condarc

报错解决！