Deductions & credits

This was a known error that has been corrected.  But it is still showing up on your return.  Follow the first steps 1-7.  If it is still not corrected, the do the workaround steps 1-10.

1. Click Deductions and Credits
2. Select Review/Edit
3. Click Edit to the right of Standard Deduction ​​Click OK, Sounds Good
4. Click Wrap Up Tax Breaks
5. Click Continue
6. Make sure that $300 is filled in and then click Continue
7. Click Lets Keep Going

If there is still a problem, then do this workaround:
Here is the work around for claiming the $300 Charity Deduction:

1. In TurboTax select Federal in the panel on the left
2. Select Deductions & Credits at the top of the page
3. Under Your Tax Breaks - Charitable Donations 
4. Click START to the right of Donations to Charity in 2020
5. Click YES
6. Click ADD next to Money
7. Type in the name of the charity that you donated to
8. Type the amount of the donation
9. Select Done with Donation
10. Select Done

Now the $300 will appear on Line 10B and in the Charitable Contributions screen