Created a schema with text2vec-openai vectorizer at class and property level. Trying to query the schema with RetrievalQA chain and trying to run the chain using a langchain agent which throws error : NotImplementedError: Saving not supported for this chain type.
Am I missing anything here? What is the correct langchain chain name for getting data from vector db?
Also, when creating a weaviate client we specify only one Class and one property (vectorstore = Weaviate(client, “ClassName”, “PropertyName”). How to query on multiple properties or is there a way to specify multiple properties to query?