Hi Logan. I have a following question that I hope you could take a look. I iterated each review, which are string, and created document object. I then tried to load them into GPTListIndex but it returns the error.
Maybe one of the rows in your df was a float instead of a string?
Try casting to a string review_list.append(str(review))
You might also want to filter out any reviews that are causing problems (or at least print the list of reviews to confirm you are grabbing the right thing)