Hey, new here! Would someone kindly point me to some docs or a tutorial about building a robust index? I used this helpful tutorial (https://bootcamp.uxdesign.cc/a-step-by-step-guide-to-building-a-chatbot-based-on-your-own-documents-with-gpt-2d550534eea5), which was super helpful to start, but it seems to choke with larger files.

Specifically, I'm getting the error Token indices sequence length is longer.... I searched through this Discord and found a few others, but couldn't work out the issue.