The weaviate documentation does not explain how to save a database with an index_name nor load an existing vector database and query it. It assumes that we are just using from_documents or from_text.

Also when i was trying to load an existing vector database, i got errors saying index_name and text_key were required parameters to WeaviateVectorStore

Reference: https://python.langchain.com/v0.2/docs/integrations/vectorstores/weaviate/

Thanks again!