HTMLLearn CSS Colors by Building a Set of Colored Markers, 98% Completed

I have completed this project but it is saying 98% completed and the step 50 is missing but I have done. Can you please help?

Have you tried going back and redoing step 50? If so and it still isn’t showing up as completed then you can safely ignore it. Having one step marked as incomplete will not prevent you from getting any certifications.

I have tried to go back and redoing but I could not.