NBGrader Manual Grading Issue

I love the look of NbGrader and I am so close to getting it to work. We are working on unbunto server and I can send and receive notebooks with no issues at all. The Autograding feature works perfectly. The issue comes with Manual Grading. Whatever we apear to do we run into the same -

Sorry, the formgrader encountered an error. Please contact the administrator of the formgrader for further assistance._

Operating system

NAME=“Ubuntu” VERSION=“18.04.4 LTS (Bionic Beaver)” ID=ubuntu ID_LIKE=debian PRETTY_NAME=“Ubuntu 18.04.4 LTS” VERSION_ID=“18.04” HOME_URL=“https://www.ubuntu.com/” SUPPORT_URL=“https://help.ubuntu.com/” BUG_REPORT_URL=“https://bugs.launchpad.net/ubuntu/” PRIVACY_POLICY_URL=“https://www.ubuntu.com/legal/terms-and-policies/privacy-policy” VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic

jupyterhub --version (if used with JupyterHub)

ipython 7.19.0 pypi_0 pypi ipython-genutils 0.2.0 pypi_0 pypi

Expected behavior

I would expect to see the assignments that need to be marked

Actual behavior

error given above

Steps to reproduce the behavior

Simply open any assignments that need to be manually graded the auto grade function works perfectly.

contents of config file.

c.CourseDirectory.course_id = “Computing”

c.Authenticator.whitelist = [ ‘james’, ‘21it21’, ]

Update this list with other assignments you want c.CourseDirectory.db_assignments = [dict(name=“ps1”)] c.CourseDirectory.root = ‘/home/jupyter-james/Computing’ Change the students in this list with that actual students in your course c.CourseDirectory.db_students = [ dict(id=“bitdiddle”, first_name=“Ben”, last_name=“Bitdiddle”), dict(id=“hacker”, first_name=“Alyssa”, last_name=“Hacker”), dict(id=“reasoner”, first_name=“Louis”, last_name=“Reasoner”) ]

c.IncludeHeaderFooter.header = “source/header.ipynb”

under course I get the message no available courses and would love to sort this issue asap. I have historically used Replit Classroom but this is now going end of life and Jupyter seams like the perfect replacement for teaching Python Coding in School.

I only need 1 teacher with of course multiple students. I n the idea world multiple classes.

Please help I have spent hours on this

[perllaghu]

This sounds like a recent install… there is a known bug with release 0.6 of nbgrader: nbconvert has been updated underneath it, and nbconvert 6.0 is not compatible.

Manually downgrade to nbconvert 5.6.1 and you’ll be fine

pip install 'nbconvert==5.6.1' 😃

[jhamrick]

Closing as duplicate of #1373