W3_A1_Assignment submission_Permission denied

I completed every exercise with a result all test passed !
but I couldn’t submit my assignment because of “permission denied: release/W3A1/Planar_data_classification_with_one_hidden_layer.ipynb”
that occured . I tried other wifi connections , others browsers . But nothing changed . Please help me since my limit date is in 3 days

The permission denied error is the result of a Coursera bug. The way to fix it is to move your notebook aside (Rename) and then do “Help → Get Latest Version”. Then move your notebook back to the standard name. That should fix the permissions.

Actually I think it would fix your problem just to do “Help → Get Latest Version” even without moving or renaming any files. That should just reset all the permissions without changing the contents of any of your notebooks or other files.