There are a couple things you can try to resolve your issue, since we can't see your return in this forum.
If you're using TurboTax Online, close the program, clear your Cache and Cookies and go back to your Massachusetts return to see if it resolved.
If not, I would suggest deleting your imported broker info and entering your 1099-B info manually in your Federal return, then going into your MA return.
Click this link for steps on How to Enter 1099-B and How to Delete Imported Transactions.
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