memory_configurationTier 1 · 70% confidence
ai-agents-memory-configuration-valueerror-missing-some-input-keys-chat-history-wh-47a10446
agent: ai_agents
When does this happen?
IF ValueError: Missing some input keys: {'chat_history'} when using ConversationalRetrievalChain with a custom prompt containing {chat_history}.
How others solved it
THEN In ConversationBufferMemory, set output_key='answer' and return_messages=True. Also ensure the prompt template explicitly includes {chat_history} as a variable and that the memory is initialized with memory_key='chat_history'.
memory = ConversationBufferMemory(memory_key='chat_history', input_key='question', output_key='answer', return_messages=True)
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