如何修复langchain中Pydantic的警告:“dict”方法已弃用;请改用“model_dump”

当我从langchain使用OpenAI运行RAG链代码时,它会向我发出这样的警告:

PydanticDeprecatedSince20: The `dict` method is deprecated; use `model_dump` instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.5/migration/
  warnings.warn('The `dict` method is deprecated; use `model_dump` instead.', DeprecationWarning)

我没有地方可以替换 dict 具有 model_dump 我甚至没有在代码中的任何位置对其进行编码。知道如何解决这个警告吗?

这是我的代码:

from client_setup import get_client
#from langchain_community.vectorstores import Weaviate
#from langchain_openai.OpenAI import OpenAI
from langchain_openai import OpenAI
from langchain_community.vectorstores import Weaviate
from langchain.retrievers.weaviate_hybrid_search import WeaviateHybridSearchRetriever
from langchain.prompts import ChatPromptTemplate
from langchain.schema.runnable import RunnablePassthrough
from langchain.schema.output_parser import StrOutputParser


client = get_client()

retriever = WeaviateHybridSearchRetriever(
        client=client, 
        index_name="Material",
        text_key="su",
        attributes=["material", "heat_treatment", "su", "sy"],
        create_schema_if_missing=True,
        )

llm = OpenAI(api_key="", model_name="gpt-3.5-turbo-instruct")


template = """You are an assistant for question-answering tasks. 
Use the following pieces of retrieved context to answer the question. 
If you don't know the answer, just say that you don't know. 
Use three sentences maximum and keep the answer concise.
Question: {question} 
Context: {context} 
Answer:
"""
prompt = ChatPromptTemplate.from_template(template)

#print(prompt)
query = "What heat treatment is used for Steel SAE 1040?"

rag_chain = (
        {"context": retriever,
         "question": RunnablePassthrough()}
        | prompt
        | llm
        | StrOutputParser()
        )


result = rag_chain.invoke(query)
print(result)