Getting error while installing Jupyter Dashboard

[sudipto84goswami]

Hi Team,

While installing Jupyter Dashboard using the command: conda install -c conda-forge jupyter_dashboards=0.7.0 -v it throws error during linking. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

An unexpected error has occurred. Please consider posting the following information to the conda GitHub issue tracker at:

https://github.com/conda/conda/issues

Current conda install:

           platform : linux-64
      conda version : 4.3.22
   conda is private : False
  conda-env version : 4.3.22
conda-build version : 1.21.3
     python version : 3.5.2.final.0
   requests version : 2.13.0
   root environment : /app/install/jupyter/anaconda3  (writable)
default environment : /app/install/jupyter/anaconda3
   envs directories : /app/install/jupyter/anaconda3/envs
                      /root/.conda/envs
      package cache : /app/install/jupyter/anaconda3/pkgs
                      /root/.conda/pkgs
       channel URLs : https://conda.anaconda.org/conda-forge/linux-64
                      https://conda.anaconda.org/conda-forge/noarch
                      https://repo.continuum.io/pkgs/free/linux-64
                      https://repo.continuum.io/pkgs/free/noarch
                      https://repo.continuum.io/pkgs/r/linux-64
                      https://repo.continuum.io/pkgs/r/noarch
                      https://repo.continuum.io/pkgs/pro/linux-64
                      https://repo.continuum.io/pkgs/pro/noarch
        config file : /root/.condarc
         netrc file : None
       offline mode : False
         user-agent : conda/4.3.22 requests/2.13.0 CPython/3.5.2 Linux/3.10.0-123.20.1.el7.x86_64 CentOS Linux/7.0.1406 glibc/2.17
            UID:GID : 0:0

$ /app/install/jupyter/anaconda3/bin/conda install -c conda-forge jupyter_dashboards=0.7.0 -v

Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 500, in run_script
    subprocess_call(command_args, env=env, path=dirname(path))
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/gateways/subprocess.py", line 56, in subprocess_call
    output=_format_output(command_str, path, rc, stdout, stderr))
subprocess.CalledProcessError: Command '['/bin/bash', '-x', '/app/install/jupyter/anaconda3/bin/.jupyter_dashboards-post-link.sh']' returned non-zero exit status 1

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 327, in _execute_actions
    run_script(target_prefix, Dist(pkg_data), 'post-unlink' if is_unlink else 'post-link')
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 516, in run_script
    raise LinkError(message)
conda.exceptions.LinkError: post-link script failed for package conda-forge::jupyter_dashboards-0.7.0-py35_0
running your command again with `-v` will provide additional information
location of failed script: /app/install/jupyter/anaconda3/bin/.jupyter_dashboards-post-link.sh
==> script messages <==
Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/bin/jupyter-dashboards", line 4, in <module>
    import jupyter_dashboards.extensionapp
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/jupyter_dashboards/extensionapp.py", line 8, in <module>
    from notebook.nbextensions import (InstallNBExtensionApp, EnableNBExtensionApp,
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/__init__.py", line 25, in <module>
    from .nbextensions import install_nbextension
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/nbextensions.py", line 32, in <module>
    from traitlets.config.manager import BaseJSONConfigManager
ImportError: No module named 'traitlets.config'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 281, in execute
    pkg_data, actions)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 344, in _execute_actions
    reverse_excs,
conda.CondaMultiError: post-link script failed for package conda-forge::jupyter_dashboards-0.7.0-py35_0
running your command again with `-v` will provide additional information
location of failed script: /app/install/jupyter/anaconda3/bin/.jupyter_dashboards-post-link.sh
==> script messages <==
Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/bin/jupyter-dashboards", line 4, in <module>
    import jupyter_dashboards.extensionapp
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/jupyter_dashboards/extensionapp.py", line 8, in <module>
    from notebook.nbextensions import (InstallNBExtensionApp, EnableNBExtensionApp,
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/__init__.py", line 25, in <module>
    from .nbextensions import install_nbextension
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/nbextensions.py", line 32, in <module>
    from traitlets.config.manager import BaseJSONConfigManager
ImportError: No module named 'traitlets.config'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/exceptions.py", line 632, in conda_exception_handler
    return_value = func(*args, **kwargs)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/cli/main.py", line 137, in _main
    exit_code = args.func(args, p)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/cli/main_install.py", line 80, in execute
    install(args, parser, 'install')
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/cli/install.py", line 363, in install
    execute_actions(actions, index, verbose=not context.quiet)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/plan.py", line 830, in execute_actions
    execute_instructions(plan, index, verbose)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/instructions.py", line 247, in execute_instructions
    cmd(state, arg)
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/instructions.py", line 108, in UNLINKLINKTRANSACTION_CMD
    txn.execute()
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/conda/core/link.py", line 297, in execute
    rollback_excs,
conda.CondaMultiError: post-link script failed for package conda-forge::jupyter_dashboards-0.7.0-py35_0
running your command again with `-v` will provide additional information
location of failed script: /app/install/jupyter/anaconda3/bin/.jupyter_dashboards-post-link.sh
==> script messages <==
Traceback (most recent call last):
  File "/app/install/jupyter/anaconda3/bin/jupyter-dashboards", line 4, in <module>
    import jupyter_dashboards.extensionapp
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/jupyter_dashboards/extensionapp.py", line 8, in <module>
    from notebook.nbextensions import (InstallNBExtensionApp, EnableNBExtensionApp,
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/__init__.py", line 25, in <module>
    from .nbextensions import install_nbextension
  File "/app/install/jupyter/anaconda3/lib/python3.5/site-packages/notebook/nbextensions.py", line 32, in <module>
    from traitlets.config.manager import BaseJSONConfigManager
ImportError: No module named 'traitlets.config'

---

Just to let you know that Trailets is also installed.

Can you please help me on this,.

[parente]

Can you please run conda list and post the version of notebook you have installed?

[sudipto84goswami]

Hi Peter,

Thanks for reviewing my question.

I am providing some details of my environment:

1. Conda Version: 4.3.22
2. Conda List is attached herewith.

Can you please let us know further. conda_list_output.txt

[parente]

From your conda list:

traitlets                 4.3.2                     <pip>
traitlets                 4.2.1                    py35_0 

It's possible that the traitlets package is not installed properly when it was first installed by conda and then overwritten by pip. You might try:

pip uninstall traitlets
conda remove traitlets
conda install traitlets

[parente]

@sudipto84goswami I'm going to close this issue because it's been inactive for over a month now. If you tried the uninstall / reinstall steps with traitlets above and are still stuck, feel free to reopen and post your current status.