I had the same issue.
Form 1040, 'TotalAdjustmentsToIncomeAmt' must be equal to 'TotalAdjustmentsAmt' plus (+) 'CharitableContributionAmt'.
Supposedly TurboTax can self-fix the issue, but after several failed attempts to submit my taxes. I realized that was going to be futile.
Looking at the 1040, lines 10a and 10b were empty. Line 10c was supposed to be the sum of those, so it should have been empty, too, or at least 0, but instead it had a value. That was the error that made it be rejected.
There was no way to delete the number, and I couldn't find a way to get TurboTax to update it, so I ended up having to redo all my taxes ... which was super fun, especially since I waited until May 17th, late at night (because who doesn't like a little stress in their life, right?).
The one bright side is that TurboTax didn't try to charge me for submitting for a different e-file.
FWIW, I think it may have happened because when I was going through, I had an incomplete return, so it thought I should use standard deductions. I added the rest of the info later, and it changed it to itemized deductions. I think in that switch, line 10c didn't get cleared. There was a similar issue when it was checking for errors before sending, where it had me down for the $300 donation deduction for those who take the standard deduction, even though at that point I was itemizing.
