c = get_config()
c.Exchange.course_id = "example_course"
c.Exchange.root = "/tmp/exchange"
Assignment.prototype.make_row = function () {
var row = $('<div/>').addClass('col-md-12');
``` diff --git a/nbgrader/nbextensions/assignment_list/assignment_list.js b/nbgrader/nbextensions/assignment_list/assignment_list.$
index e4cd9a89..966840a6 100644
--- a/nbgrader/nbextensions/assignment_list/assignment_list.js
+++ b/nbgrader/nbextensions/assignment_list/assignment_list.js
@@ -315,10 +315,17 @@ define([
Assignment.prototype.make_row = function () {
var row = $('<div/>').addClass('col-md-12');
```
The course id has not been set in nbgrader_config.py
sqlalchemy.exc.InvalidRequestError: Can't determine which FROM clause to join from, there are multiple FROMS which can join to this entity. Try adding an explicit ON clause to help resolve the ambiguity
)
File "/usr/local/miniconda3/envs/earth-analytics-python/lib/python3.7/site-packages/nbgrader/api.py", line 2504, in notebook_submission_dicts
).join(SubmittedAssignment, Notebook, Assignment, Student, Grade, GradeCell)\