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when i submit it always shows “calculating”. Dont know if problem is in my code or some site issue. for reference my code link is

Hi the platform is working just fine. There is a problem in your predictions. Your final csv y values are very large and wrong predictions. You can make sure if platform is working or not by submitting the sample_submission.csv file in test.zip. Please debug your code, the final test values should not be very this much large.

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I m unable to get the error in the code. what is wrong?

Hi there is no problem in your code. Just reduce the step size to 0.0001. That would work!