BMthanks so much for this guide! in step 4 'importing necessary libraries:', the third function throws an error for me. do we need to 'import pinecone' if we also have 'from langchain.vectorstores import Pinecone' further below?Comment·Article·May 4, 2023·Building a Document-based Question Answering System with LangChain, Pinecone, and LLMs like GPT-4 and ChatGPT