C1M4 Assignment is complete, validated, passed and saved. Have grading issue

C1M4 Assignment is complete, validated, passed and saved. When I submit it for grading - get the below error:

Unable to complete the course due to this. Could you kindly help me.

I am unable to complete the course. Also, my latest assignment is saved with the timestamp.

Regards - Ram

Have you tried restarting the kernel (Kernel → Restart and Clear Output) and running the cells in order, from the very top (import test_your_code)? Please try this and let me know if it helps.

Thank you so much. I actually did that and it did work when I logged off the portal, relogged in after clearing the cache and restarted the kernel. I did complete the exercise. Thanks again!! - Ram.