Keynote won't save or close

When I go to close my keynote presentation, I get the pop up "Do you want to save the changes made to the document".

I click yes, or revert changes because it doesn't matter at this point. The document won't close after you click an option. I can also tell this is happening when the document stops completing "undo" tasks. It's so weird.

To get it to close, I have to use force quit, but it's a risk because I can't tell at what point did the document stop saving? I have to start a new keynote docs, copy all the slides into the new doc, save that new doc, then force quit. It's a lot of steps if that's what you have to do EVERYTIME you go to close keynote.

I've restarted my computer, gotten updates, I have no clue what's wrong.

This has been happening everyday for a 1.5 weeks.

This problem has occurred multiple times in the past, but then will go a couple months without happening

I'm using a macbook pro

Any thoughts?