Extra inputs are not permitted [type=extra_forbidden, input_value=['schema', 'role', '...r_input', 'role_config'], input_type=list]

[rajarshp]

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Example Code

conversation_memory =  ConversationBufferMemory(memory_key="chat_history", return_messages=True)
    
    suffix = """ SCHEMA: {schema}
    User Role: {role}
    Role Config: {role_config}
    ID: {id}
    User Request: {user_input}"""

    few_shot_prompt= FewShotChatMessagePromptTemplate(
        examples = examples,
        example_prompt = example_prompt,
        imput_variables= ["schema","role","id","user_input","role_config"]
    )
    
    full_prompt = ChatPromptTemplate.from_messages([
        SystemMessagePromptTemplate.from_template(prefix),
        few_shot_prompt,
        SystemMessagePromptTemplate.from_template(suffix)
    ])
    
    llm_chain = LLMChain(prompt = full_prompt,llm=llm , memory= conversation_memory, verbose=True)
 response = llm_chain.invoke({
        "user_input": user_input,
        "schema": schema,
        "role": role,
        "id": id,
        "role_config": role_config
    })

Description

Hello
I have installed the latest lanchain and trying to implement a few shorts with memory but I can't fix this below error, can you please help me how to fix this error?

Error:

2025-01-21 22:17:24,860 root         537 ERROR Error generating result: 1 validation error for FewShotChatMessagePromptTemplate
imput_variables
  Extra inputs are not permitted [type=extra_forbidden, input_value=['schema', 'role', 'id...r_input', 'role_config'], input_type=list]
    For further information visit https://errors.pydantic.dev/2.9/v/extra_forbidden

System Info

langchain==0.3.15
langchain-community==0.3.14
langchain-core==0.3.31
langchain-google-genai==2.0.8
langchain-google-vertexai==2.0.11
langchain-text-splitters==0.3.5

[SyedBaqarAbbas]

Hello @rajarshp,

I tried replicating this issue and observed that you had a minor typo in it. You had spelled imput_variables=["schema","role","id","user_input","role_config"] which says imput, instead of input. Correcting the typo should fix the issue.

[rajarshp]

@SyedBaqarAbbas Sorry that was a typo - which I already corrected but still getting error. Now the error has changed.

527 ERROR Error generating result: One input key expected got ['role_config', 'role', 'schema', 'user_input', 'id']

[SyedBaqarAbbas]

@rajarshp the classes you are using are deprecated and are no longer being maintained. Shifting to newer version should fix most of the issues.

Read more:

1. How to migrate from v0.0 chains
2. How to add memory to chatbots

[rajarshp]

Thanks, @SyedBaqarAbbas. I already checked those articles, but I am new to this area, and from those examples, I am not able to make the above code work. so I am trying to make the legacy implementation work.