The notebook has a frequent error : “Permission denied:

release/W3A1/Planar_data_classification_with_one_hidden_layer.ipynb”. At the end, the notebook cannot be submitted at all. I can’t save to other names or download a copy because of this error. Now waiting for help online.

To fix the “Permission Denied” error, follow the instructions that are in the banner pinned to to top of every thread.