Why would the IRS have a "Verification of Non-Filing Status" letter for me on my 2020 taxes, when I did file me taxes?

Applying for home loan. Lender requested transcripts from 2019 and 2020 taxes. 2019 Transcripts are available, but 2020 only pulls up a letter of "Verification of Non-Filing Status." I filed my taxes on 5/17 and they were accepted. Why is this letter there and how do I obtain my transcripts for 2020?