Im following this tutorial https://github.com/chroma-core/gpt4-pdf-chatbot-langchain-chroma
but get an error when ingesting the PDF to Pinecone
error [PineconeError: PineconeClient: Error calling upsert: PineconeError: The requested feature 'Namespaces' is not supported by the current index type 'Starter'.]
do I need to upgrade the pinecone tier?