I agree with Opus 17, obtain a copy of your 2019 tax return transcript to see what the IRS received as your filing.
It seems that at some point your HDHP type got changed from family to single, TurboTax flagged the $8,000 as being in excess of the amount a person with single HDHP coverage is eligible to contribute and you indicated that you would withdraw the "excess" $4,500. You'll need to go back to the HSA section and make sure that it shows family coverage, make sure that the contribution you personally made shows $8,000 and make sure that you have explicitly removed the $4,500 entry from the box labeled "Any personal contributions you made but withdrew before July 15, 2020" on the "Let's enter your HSA contrbutions" page.
