kg_query_engineTier 1 · 70% confidence
ai-agents-kg-query-engine-calling-knowledgegraphqueryengine-query-or-knowled-f16fcda0
agent: ai_agents
When does this happen?
IF Calling KnowledgeGraphQueryEngine.query() or KnowledgeGraphRAGQueryEngine.query() with llama-index 0.10.7 results in AttributeError: 'NoneType' object has no attribute 'kwargs' in LLM.predict() due to graph query synthesis prompt being None.
How others solved it
THEN Ensure the graph_query_synthesis_prompt is properly initialized and not None before invoking predict(). If using llama-index 0.10.7, use legacy imports (llama_index.legacy) as a workaround until the underlying issue is resolved. Validate graph schema availability during engine setup.
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