如何使用LangChain和AzureOpenAI在Python中解决AttribeHelp和BadPressMessage错误

我正在研究在Python中集成LangChain和AzureOpenAI，并遇到了一些问题.我最近从一个废弃的方法更新到了一个新的类实现，但现在我遇到了一些我不完全理解的错误.下面是我代码的相关部分:

from langchain_openai import AzureOpenAI as LCAzureOpenAI
# from langchain.llms import AzureOpenAI <-- Deprecated

# Create client accessing LangChain's class
client = LCAzureOpenAI(
    openai_api_version=api_version,
    azure_deployment=deployment_name,
    azure_endpoint=azure_endpoint,
    temperature=TEMPERATURE,
    max_tokens=MAX_TOKENS,
    model=model
    #,model_kwargs={'azure_openai_api_key': api_key}
)

# Attempt to send a chat message
client.chat("Hi")

这会导致以下错误:

AttributeError: 'AzureOpenAI' object has no attribute 'chat'

当我用client.invoke("Hi")替换client.chat("Hi")时，我会得到一个不同的错误:

BadRequestError: Error code: 400 - {'error': {'code': 'OperationNotSupported', 'message': 'The completion operation does not work with the specified model, gpt-4. Please choose different model and try again. You can learn more about which models can be used with each operation here: https://go.microsoft.com/fwlink/?linkid=2197993.'}}

如何解决这些错误？

对于这些错误以及如何解决它们的任何指导或见解，我们将不胜感激！