run-llama/llama_index · error · ValueError

Unexpected kwargs: {kwargs}

Error message

Unexpected kwargs: {kwargs}

What it means

Error "Unexpected kwargs: {kwargs}" thrown in run-llama/llama_index.

Source

Thrown at llama-index-core/llama_index/core/memory/vector_memory.py:118

        retriever_kwargs: Optional[Dict] = None,
        **kwargs: Any,
    ) -> "VectorMemory":
        """
        Create vector memory.

        Args:
            vector_store (Optional[BasePydanticVectorStore]): vector store (note: delete_nodes must
                be implemented. At time of writing (May 2024), Chroma, Qdrant and
                SimpleVectorStore all support delete_nodes.
            embed_model (Optional[EmbedType]): embedding model
            index_kwargs (Optional[Dict]): kwargs for initializing the index
            retriever_kwargs (Optional[Dict]): kwargs for initializing the retriever

        """
        from llama_index.core.indices.vector_store import VectorStoreIndex

        if kwargs:
            raise ValueError(f"Unexpected kwargs: {kwargs}")

        index_kwargs = index_kwargs or {}
        retriever_kwargs = retriever_kwargs or {}

        if vector_store is None:
            # initialize a blank in-memory vector store
            # NOTE: can't easily do that from `from_vector_store` at the moment.
            index = VectorStoreIndex.from_documents(
                [], embed_model=embed_model, **index_kwargs
            )
        else:
            index = VectorStoreIndex.from_vector_store(
                vector_store, embed_model=embed_model, **index_kwargs
            )
        return cls(vector_index=index, retriever_kwargs=retriever_kwargs)

    def get(
        self, input: Optional[str] = None, initial_token_count: int = 0, **kwargs: Any

View on GitHub (pinned to afd0fef371)

Solutions

1. Remove the unexpected keyword arguments from the VectorMemory constructor call.
2. Check the VectorMemory signature and pass only supported parameters.

When it happens

Trigger: Thrown at llama-index-core/llama_index/core/memory/vector_memory.py:118 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of run-llama/llama_index@afd0fef371 (2026-08-15). Data as JSON: /api/errors/21547e1042f4bda9. Report an issue: GitHub.