Filed Schedule C but not 1099-K

I just received a notice letter from the State of Missouri that in 2021 I failed to file the 1099-k I received from Ebay. I checked and I did file the Schedule C that matches the income shown on that 1099. I had filed online through Turbo Tax and somehow I was not asked to upload the 1099-k. I have been given 30 days to correct this or be penalized. How do I do this?

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