ModuleNotFoundError: No module named 'tiktoken'

you can try to use pipreqs to automatically generate your requirements.txt file and try to reboot the website to see if it works, watch this article here: How to Auto Generate requirements.txt (Dependencies) in Python - 3 examples If its still not working, you can try checking out the other forums, i saw that they have included langchain in their requirements.txt, here is the link to it: ModuleNotFoundError: No module named 'faiss'