langchain: Pinecone retriever throwing: KeyError: 'text'

My query code is below:

pinecone.init(
    api_key=os.environ.get('PINECONE_API_KEY'),  # app.pinecone.io
    environment=os.environ.get('PINECONE_ENV')  # next to API key in console
)
index = pinecone.Index(index_name)
embeddings = OpenAIEmbeddings(openai_api_key=os.environ.get('OPENAI_API_KEY'))

vectordb = Pinecone(
    index=index,
    embedding_function=embeddings.embed_query,
    text_key="text",
)
llm=ChatOpenAI(
    openai_api_key=os.environ.get('OPENAI_API_KEY'),
    temperature=0,
    model_name='gpt-3.5-turbo'
)
retriever = RetrievalQA.from_chain_type(
    llm=llm,
    chain_type="stuff",
    retriever=vectordb.as_retriever()
)
tools = [Tool(
    func=retriever.run,
    description=tool_desc,
    name='Product DB'
)]
memory = ConversationBufferWindowMemory(
    memory_key="chat_history",  # important to align with agent prompt (below)
    k=5,
    return_messages=True
)
agent = initialize_agent(
    agent='chat-conversational-react-description', 
    tools=tools, 
    llm=llm,
    verbose=True,
    max_iterations=3,
    early_stopping_method="generate",
    memory=memory,
)

If I run: agent({'chat_history':[], 'input':'What is a product?'})

It throws:

File “C:\Users\xxx\AppData\Local\Programs\Python\Python311\Lib\site-packages\langchain\vectorstores\pinecone.py”, line 160, in similarity_search text = metadata.pop(self._text_key) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ KeyError: ‘text’

This is the offending block in site-packages/pinecone.py:

 for res in results["matches"]:
            # print('metadata.pop(self._text_key) = ' + metadata.pop(self._text_key))
            metadata = res["metadata"]
            text = metadata.pop(self._text_key)
            docs.append(Document(page_content=text, metadata=metadata))

If I remove my tool like the line below, everything executes (just not my tool):

tools = []

Can anyone help me fix this KeyError: ‘text’ issue? My versions of langchain, pinecone-client and python are 0.0.147, 2.2.1 and 3.11.3 respectively.