Hi Zenville! Welcome to the community! As mentioned above, please check first if you’ve satisfied all conditions here. If so, then please check these next two:
-
The notebook should be saved before submitting. Please click
File > Save and Checkpointand see that the timestamp at the top of the notebook is updated. Else, the grader might get an old state of the notebook. -
You might have used the
#grade-up-to-herecomment somewhere in the notebook. That will cause the notebook to ignore the rest of your code. That tag should be removed if you’re not after partial grading.
If there is still an error after all these, you can reply here. Thanks and hope this helps!