If you encounter this error, please update the Submission Type settings in your assignment to ensure CoGrader can successfully export submissions to Canvas.
Follow the steps below:
Step 1: Go to your Dashboard and select the course
Step 2: Select the assignment
Step 3: Click on 'Edit'
Step 4: Tick the option 'Website URL' and save
Done! Now you can go back to CoGrader and try to export the submission again.
Other Errors
Allow Multiple Submission Attempts
If you see an Export Error next to one or more students after exporting to Canvas, follow these steps:
Allow multiple submission attempts
In Canvas, go to your assignment Settings and set Allowed Attempts to Unlimited.
This prevents export errors when students resubmit or when CoGrader tries to update feedback for a previously graded submission.
Several teachers have found that this resolves the issue entirely.
Retry Export
The export should complete successfully.
Check the Canvas “Assign Access” Dates
Another common reason for export errors comes from the Assign Access section in Canvas assignment settings.
This section includes the following date fields:
Due Date
Available From
Until
If your export attempt happens outside of these time windows, CoGrader will display an error message, such as:
“Please check the Available From field in the Canvas Assignment Assign Access Settings.”
This means that the current date or time falls outside of the assignment’s active range in Canvas.
To fix this:
Open your Canvas assignment settings.
Scroll to the Assign Access section.
Make sure the Available From, Until, and Due Date fields include the date and time when you’re exporting.
Save your changes and try exporting again.
This same logic applies whether the issue is before the Available From date, after the Until date, or past the Due Date. Adjusting these boundaries will allow CoGrader to export feedback successfully.