mjhjmtu

I come across this error when trying to install nbgrader extension for jupyterhub. The error could be a trivial one but I can't manage to fix it.

nbgrader extension install

Unrecognized JSON config file version, assuming version 1
Installing create_assignment extension
Making directory: /usr/local/share/jupyter/nbextensions/create_assignment/
Traceback (most recent call last):
 File "/home/mark/.local/bin/nbgrader", line 11, in <module>
 sys.exit(main())
 File "/home/mark/.local/lib/python3.5/site-packages/nbgrader/apps/nbgraderapp.py", line 249, in main
 NbGraderApp.launch_instance()
 File "/home/mark/.local/lib/python3.5/site-packages/jupyter_core/application.py", line 267, in launch_instance
 return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
 File "/home/mark/.local/lib/python3.5/site-packages/traitlets/config/application.py", line 596, in launch_instance
 app.start()
 File "/home/mark/.local/lib/python3.5/site-packages/nbgrader/apps/nbgraderapp.py", line 242, in start
 super(NbGraderApp, self).start()
 File "/home/mark/.local/lib/python3.5/site-packages/jupyter_core/application.py", line 256, in start
 self.subapp.start()
 File "/home/mark/.local/lib/python3.5/site-packages/nbgrader/apps/extensionapp.py", line 249, in start
 super(ExtensionApp, self).start()
 File "/home/mark/.local/lib/python3.5/site-packages/jupyter_core/application.py", line 256, in start
 self.subapp.start()
 File "/home/mark/.local/lib/python3.5/site-packages/nbgrader/apps/extensionapp.py", line 56, in start
 self.install_extensions()
 File "/home/mark/.local/lib/python3.5/site-packages/nbgrader/apps/extensionapp.py", line 46, in install_extensions
 logger=self.log)
 File "/home/mark/.local/lib/python3.5/site-packages/notebook/nbextensions.py", line 206, in install_nbextension
 os.makedirs(dest_dir)
 File "/usr/lib/python3.5/os.py", line 241, in makedirs
 mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/usr/local/share/jupyter/nbextensions/create_assignment/'

would appreciate your suggestions to overcome this issue.

well for this particular case I just had to add --user to my command like this :

nbgrader extension install --user

I do not know how, but it solves the problem.

If you install nbgrader with conda this should not be an issue:

 $ conda install nbgrader -c conda-forge