W4A2/DeepNeuralNetwork Application.ipynb Lab Grading Error

I have tried submitting the lab multiple times and have attached a screenshot for reference. Despite following all the lab rules, I encounter an issue where, upon opening the notebook, it shows two notebooks in one. I’m unable to delete the second one due to the mandatory grading system section. Although I have passed all the tests repeatedly, I keep getting an error during submission.

The first lab was completed, but another lab started within the same notebook. As a result, the grading system fails to accept it.

It seems you somehow duplicate some cells. Here is the guide on how to get a clean copy of your Notebook. But please note that it will also remove your code, so, you may need to download your old notebook or copy your code somewhere else.

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Perhaps you had an unintended copy-and-paste.

If you don’t have a checkpoint that you can restore, then getting a new copy of the lab is the best option.

Thanks, it works for me cell was duplicated

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Not copy paste but it was duplicate cell thanks

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