Delete the state tax return and then complete the state return again. In the File section you will be asked to pay for the state program, $50, and be able to e-file your tax return.
See this TurboTax support FAQ for deleting a state tax return - https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-delete-my-state-return-in-turbotax-on...
