I'm using a Moodle Quiz with Moodle being the Provider. I did all the LTI setup. From the remote system, the student is taken to the Moodle quiz , the attempt shows in Moodle, but the grade is not passed back.
I get the following message when using the Publish as LTI tool grade sync:
Starting - Grade sync for shared tool '20' for the course '250'. Failed - The grade '0.3857143' for the user '7079' in the tool '20' for the course '250' failed to send. Completed - Synced grades for tool '20' in the course '250'. Processed 1 users; sent 0 grades. ... used 35 dbqueries ... used 0.65261793136597 seconds Scheduled task complete: Publish as LTI tool grade sync (enrol_lti\task\sync_grades)