Hi Arjun, I can assure you that the demo does work, as shown in the GIF and in the GitHub repo. So this is likely user error at this point.

Based on your other comment, it sounds like you haven't added your Pinecone API key, which is an essential step. You'll need to obtain a key from Pinecone and then add that to your `.env` file. I have a complete list of steps to follow in the GitHub repo's README, so please try following those. https://github.com/thawkin3/plagiarism-checker

If you run into further errors, I'd recommend submitting an issue in GitHub.