which is the best self-hosted vector+document+index persistent storage? 🙂

I have a persisted index, and loaded using load_index_from_storage. but when I wish to use it in the VectorIndexRetriever, it gives a warning: "expected type vector store index, given base Index"..

Hi, I'm trying the Pydantic Extractor example, when I set the allow_multiple=True, I got the below error::

site-packages\llama_index\core\extractors\metadata_extractors.py
", line 484, in _acall_program
return ret_object.dict()
^^^^^^^^^^^^^^^
AttributeError: 'list' object has no attribute 'dict'