Why is Langchainrb Vectorsearch Pinecone ask method returning error "unknown keyword: :prompt"?

Question

I've been working on a Langchain/Pinecone integration for a bit here, and this code was previously working for me. It seems to have broke sometime in the past month or so. Here's a stripped down version that I can run via rails runner:

begin
  llm_options = { completion_model_name: "gpt-4-1106-preview", chat_completion_model_name: "gpt-4-1106-preview" }   
  llm = Langchain::LLM::OpenAI.new(api_key: ENV["OPENAI_ACCESS_TOKEN"], default_options: llm_options)

  client = Langchain::Vectorsearch::Pinecone.new(api_key: ENV["PINECONE_API_KEY"],
                                                 index_name: "development-topic-test",
                                                 environment: "us-east-1-aws",
                                                 llm: llm)

  result = client.ask(question: "how do you reverse an array in ruby?", namespace: "topic-markets")
  puts result.inspect

rescue => e
  puts "RESCUED: #{e}"
end

This results in the output:

RESCUED: unknown keyword: :prompt

Things I've checked:

Environment variables are correct
The environment is correct and the index name exists in my Pinecone environment
The namespace exists in that Pinecone index
Also tried GPT model "gpt-4-turbo-preview" -- yielded the same result
Tried running the same code in a staging environment with different configuration values -- yielded the same result

Any ideas?

If I had to guess, an API method got changed somewhere, and some code has not been updated yet.

Note: I was on langchainrb gem version 0.9.0 when experiencing this error. — railsguy42
– railsguy42, Commented Feb 19, 2024 at 20:08

railsguy42 · Accepted Answer · 2024-02-19 20:08:00Z

1

For anyone out there who comes across this, the answer was as simple as updating the gem(s).

I performed a bundle update in my rails app which updated the following gems to:

langchainrb (0.9.2)
pinecone (1.0.1)

answered Feb 19, 2024 at 20:08

railsguy42

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