Langchain Apify Dataset Loader Issue

Whenever I try to create a vectorstore index using Langchain and the APIfy dataset loader, I get the following error: 'ApifyDatasetLoader' object has no attribute 'page_content' Which is odd because the code was working just last week (following the exact documentation on Langchain) and now it refuses to work. The data does not have the attribute 'page_content' despite specifying that in the mapping function. I have attached the code I'm using too.