Comments (1)
The problem arises when MessagePlaceHolder
is set as optional as according to this code, the input variable name set by MessagePlaceHolder
is excluded from the ChatPromptTemplate
. Consequently, when you invoke the chain, the MessagePlaceHolder
variable is not filled in by the ConversationBufferMemory
.
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Related Issues (20)
- DOC: HuggingfaceEndpoints doc not matching LCEL style
- DOC: `langchain-community` will be not installed with `pip install langchain` HOT 2
- OutputParserException: Parsing LLM output produced both a final answer and a parse-able action HOT 4
- DOC: <Langchain docs and library classdocs not updated after migration to the new langchain_huggingface library>
- Runnables have `astream_events`, but no synchronous `stream_events` HOT 7
- openai.APITimeoutError: Request timed out. HOT 2
- RetryWithError is not integrated with LCEL. HOT 2
- hub.push() raise an error with template created with ChatPromptTemplate.from_messages builder (Trying to load an object that doesn't implement serialization)
- RunnablePassthrough().pick() not working as expected HOT 1
- Could not parse tool input HOT 1
- prompt injection in react agent
- cannot access local variable 'final' where it is not associated with a value HOT 1
- langchain-pinecone package depends on pinecone-client 3.2.2, but the latest version is 4.0.0
- LLMGraphTransformer: Invalid schema for function 'DynamicGraph': None is not of type 'array' HOT 2
- KeyError: `chains` error when SimpleSequentialChain initialisation with RunnableSequence HOT 5
- Base64 images get truncated using AgentExecutor with create_openai_tools_agent HOT 1
- BedrockAnthropicTokenUsageCallbackHandler does not function with langchain_aws
- SQL Agent with "llm.with_retry()": Can't instantiate abstract class BaseLanguageModel with abstract methods agenerate_prompt, apredict, apredict_messages, generate_prompt, invoke, predict, predict_messages (type=type_error)
- Standardize docstrings and improve coverage HOT 1
- SelfQueryRetriever returns empty result for composite filter with query
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