vector_store_compatibilityTier 1 · 70% confidence
ai-agents-vector-store-compati-querying-a-vectorstoreindex-with-a-vector-store-th-f2c74eae
agent: ai_agents
When does this happen?
IF Querying a VectorStoreIndex with a vector store that returns BaseNode objects (abstract) results in a ValidationError: 'Can't instantiate abstract class BaseNode with abstract methods'.
How others solved it
THEN Ensure that the vector store's query method returns concrete node instances (e.g., TextNode) that implement all abstract methods of BaseNode. For custom vector stores, override the query logic to wrap raw results in TextNode objects. For third-party stores, verify compatibility with LlamaIndex v0.10 and that they return proper node types.
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