conda error tf gpu

[jalal@goku pset3_CNN]$ unset PYTHONPATH
[jalal@goku pset3_CNN]$ echo $PYTHONPATH

[jalal@goku pset3_CNN]$  conda install -c anaconda tensorflow-gpu
Solving environment: failed

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

    Traceback (most recent call last):
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/exceptions.py", line 819, in __call__
        return func(*args, **kwargs)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/cli/main.py", line 78, in _main
        exit_code = do_call(args, p)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/cli/conda_argparse.py", line 77, in do_call
        exit_code = getattr(module, func_name)(args, parser)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/cli/main_install.py", line 11, in execute
        install(args, parser, 'install')
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/cli/install.py", line 235, in install
        force_reinstall=context.force,
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/solve.py", line 518, in solve_for_transaction
        force_remove, force_reinstall)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/solve.py", line 451, in solve_for_diff
        final_precs = self.solve_final_state(deps_modifier, prune, ignore_pinned, force_remove)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/solve.py", line 180, in solve_final_state
        index, r = self._prepare(prepared_specs)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/solve.py", line 592, in _prepare
        self.subdirs, prepared_specs)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/index.py", line 215, in get_reduced_index
        new_records = query_all(spec)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/index.py", line 184, in query_all
        return tuple(concat(future.result() for future in as_completed(futures)))
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/subdir_data.py", line 95, in query
        self.load()
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/subdir_data.py", line 149, in load
        _internal_state = self._load()
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/subdir_data.py", line 218, in _load
        mod_etag_headers.get('_mod'))
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/subdir_data.py", line 280, in _read_local_repdata
        _internal_state = self._process_raw_repodata_str(raw_repodata_str)
      File "/scratch/sjn-p3/anaconda/anaconda3/lib/python3.6/site-packages/conda/core/subdir_data.py", line 369, in _process_raw_repodata_str
        info['fn'] = fn
    TypeError: 'NoneType' object does not support item assignment

`$ /scratch/sjn-p3/anaconda/anaconda3/bin/conda install -c anaconda tensorflow-gpu`

  environment variables:
                 CIO_TEST=<not set>
               CONDA_ROOT=/scratch/sjn-p3/anaconda/anaconda3
              CONDA_SHLVL=0
               MODULEPATH=/usr/share/Modules/modulefiles:/etc/modulefiles
                     PATH=/scratch2/system/opt/pycharm-community-2018.1.2/bin:/scratch2/google-
                          cloud-sdk/bin:/scratch2/google-cloud-sdk/bin:/scratch/sjn-p3/anaconda/
                          anaconda3/bin:/scratch2/system/opt/pycharm-
                          community-2018.1.2/bin:/scratch2/google-cloud-
                          sdk/bin:/scratch2/google-cloud-sdk/bin:/scratch/sjn-p3/anaconda//anaco
                          nda3/bin:/scratch2/system/opt/pycharm-
                          community-2018.1.2/bin:/scratch2/google-cloud-
                          sdk/bin:/scratch2/google-cloud-sdk/bin:/scratch/sjn/anaconda/bin:/usr/
                          lib64/qt-3.3/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bi
                          n:/sbin:/usr/local/IT/bin:/home/grad3/jalal/bin:/scratch/sjn-p2/anacon
                          da/anaconda2/bin
           QT_PLUGIN_PATH=/usr/lib64/kde4/plugins:/usr/lib/kde4/plugins
       REQUESTS_CA_BUNDLE=<not set>
            SSL_CERT_FILE=<not set>
               WINDOWPATH=1

     active environment : None
            shell level : 0
       user config file : /home/grad3/jalal/.condarc
 populated config files : /home/grad3/jalal/.condarc
          conda version : 4.5.11
    conda-build version : 3.2.2
         python version : 3.6.4.final.0
       base environment : /scratch/sjn-p3/anaconda/anaconda3  (read only)
           channel URLs : https://conda.anaconda.org/anaconda/linux-64
                          https://conda.anaconda.org/anaconda/noarch
                          https://conda.anaconda.org/conda-forge/linux-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/free/linux-64
                          https://repo.anaconda.com/pkgs/free/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/pro/linux-64
                          https://repo.anaconda.com/pkgs/pro/noarch
          package cache : /scratch/sjn-p3/anaconda/anaconda3/pkgs
                          /home/grad3/jalal/.conda/pkgs
       envs directories : /home/grad3/jalal/.conda/envs
                          /scratch/sjn-p3/anaconda/anaconda3/envs
               platform : linux-64
             user-agent : conda/4.5.11 requests/2.18.4 CPython/3.6.4 Linux/3.10.0-862.14.4.el7.x86_64 centos/7 glibc/2.17
                UID:GID : 275735:3935
             netrc file : None
           offline mode : False


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[jalal@goku pset3_CNN]$