What should I put into the K-40 form Historic Site Fund? I have tired zero and even left it blank and it keeps giving me an error on check

Yes, this is asking for a site location because you entered a 0 for the Historic Site contribution. Here's how to fix that:

1. Sign in to your TurboTax account.
2. Select State Taxes, then Your State Returns.
3. Select Edit to the right of Kansas.
4. On the screen, Your 2023 Kansas taxes are ready for us to check, select Edit to the right of Other situations.
5. On the screen A few things before we wrap up your state taxes, select Revisit to the right of Donations.
6. Clear the box to the right of Historic Site Contribution Fund and leave it blank.
7. Select Continue. 
8. Keep going until TurboTax checks your return again.