error/assignment/errornosubmissions
From MoodleDocs
Some things you can try:
- Check if the submitted assignments are still in "Draft" state.
- Ensure you are not a victim of [https://tracker.moodle.org/browse/MDL-35910 MDL-35910]
Note: You are currently viewing documentation for Moodle 2.2. Up-to-date documentation for the latest stable version is available here: error/assignment/errornosubmissions.
Some things you can try: