Turbotax made an error in the general info. How do I fix it?

Can you provide more information on the error that was made?

I am NOT claimed on anybody else's tax return. However, Turbotax said my HSA contributions are all taxable because someone CAN claim me on their return. This is not correct.

You need to edit your personal information in TurboTax. Find the "My Info" option on your left menu bar, and then edit your personal information.