Trying to access an LTI ressource under juniper.alpha1. The same course used to work at least under ironwood, hawthorn and ginkgo, probably ficus too.
I get error messages when trying to get the grade back in the gradebook on http://ltiapps.net/test/tc.php
For a more detailed explanation, see https://discuss.openedx.org/t/lti-debugging-and-juniper/1272 where I already explained the issue and wrote some of the error logs I got.
Use the course attached. The course is in French unfortunately and the answer is 50.
We normally use http://ltiapps.net/test/tc.php in order to test it calling using a launch URL like http://cours-virginie.edulib.org/lti_provider/courses/course-v1:UMontreal+TEST_LTI_01+E2016/block-v1:UMontreal+TEST_LTI_01+E2016+type@sequential+block@1c40b4c92c58421da885bea7a63992e1 for example.
If you use the course, you will have to import it on your juniper.alpha1 system and create your own LTI consumers keys.