Candy Analysis cannot be graded

I reached the final assignment-Candy Analysis for AI Python for beginners, I completed all the exercises and passed all checkpoints,but found that the assignment cannot be graded, I guess maybe I delete some formulas at the back-end. Can anyone help?

Hi @Cat3,

Firstly, I noticed you have several copies of the notebook within your workspace. Please use and work in the notebook titled C1M4_Assignment.ipynb, because that’s the notebook that goes for grading when you click on submission.

I took a look at your notebook, C1M4_Assignment.ipynb, and noticed that you are not passing all of the tests. Your exercise 4 fails.

Please fix your mistake and try submitting again.

Let me know how it goes.
Best,
Mubsi