Formgrader says There was an error generating feedback of 'some-assignment'. with no details

[lahwaacz]

Operating system

Arch Linux

nbgrader --version

Python version 3.11.5 (main, Sep  2 2023, 14:16:33) [GCC 13.2.1 20230801]
nbgrader version 0.9.1

jupyterhub --version (if used with JupyterHub)

4.0.2

jupyter notebook --version

7.0.6

Expected behavior

When some operation results in an error, the error message should be shown to provide the user details necessary to deal with it.

Actual behavior

Formgrader says There was an error generating feedback of 'some-assignment'. with no details:

Steps to reproduce the behavior

Unknown, I have no idea what went wrong...

[brichet]

These empty error seems to occur when there is an exception on server side

nbgrader/nbgrader/server_extensions/formgrader/static/js/manage_assignments.js

Line 418 in 2ef4451

.fail(_.bind(this.generate_feedback_failure, this));

Can you look at the log on the server ?

[lahwaacz]

There is no error logged on the server side around the time when this happened.