New Analytics has issues with large courses. See "Why is New Analytics not loading for very large courses?' header in the New Analytics FAQ webpage.
How large is this course in terms of students and assignments?
The formula is number of students * number of assignments = weight
Canvas says New Analytics is tested to work for courses with weight of up to 50,000.
My institution has a few resource courses where all students are enrolled. For new analytics to work on these courses, we had to create multiple copies of the shells tied to a blueprint. We had a course with 20,000 students * 12 assignments. New Analytics would not load.
Thanks
Will
Please note that the article linked above says report any loading misbehavior in courses with a weight of under 50,000 should be reported to them.
Thanks
Will