Permission denied error

[mganeshmohan]

I was using the demo to understand how to use it and I get the following error either in 'nbgrader assign ps1' command from instructor or when I do 'validate' before 'submit'. Unable to complete the demo beyond this point. I was running the demo directly using the binder.

with open(os.path.join(env['jupyter_config'], 'migrated'), 'w') as f:

IOError: [Errno 13] Permission denied: u'/home/main/.jupyter/migrated'
main@frontend-server:~/notebooks/instructor$

[jhamrick]

I went to debug this, but unfortunately it seems that Binder is down at the moment... I'll have a look at this again in a few days. If you have another chance to look at it, could you paste the full traceback (including the command you ran)?