The community member is trying to use the Advanced Fusion Retriever with a Milvus Vector Store that already has indexed data, but it is not working as the retriever wants to reindex everything every time. The comments suggest that the community member should set up the existing vector store and then use the VectorStoreIndex.from_vector_store() method, but this is failing and showing zero entities. Additionally, there is an error in the query_index method, which is causing a division by zero error.
