evaluate() fails with *APIConnectionError(Connection error.)* when azure (AzureOpenAIEmbeddings, AzureChatOpenAI) langchain models are used

[rajivchandrasekar]

[ ] I have checked the documentation and related resources and couldn't resolve my bug.

Describe the bug
While using azure models (AzureOpenAIEmbeddings, AzureChatOpenAI) the evaluate() module seems to fail with
Error Message : Exception raised in Job[1]: APIConnectionError(Connection error.)

Ragas version: Version: 0.2.15
Python version: 3.11.0

Code to Reproduce

import os
from langchain_openai.embeddings import AzureOpenAIEmbeddings
from langchain_openai.chat_models import AzureChatOpenAI
import httpx
from dotenv import load_dotenv

from ragas.metrics import FactualCorrectness, LLMContextPrecisionWithoutReference, Faithfulness
from ragas import SingleTurnSample, EvaluationDataset
from ragas.llms import LangchainLLMWrapper
from ragas.embeddings import LangchainEmbeddingsWrapper


from ragas import evaluate
load_dotenv()


embeddings = AzureOpenAIEmbeddings(model="MYMODELNAME", http_client=httpx.Client(verify=False))
evaluation_llm = AzureChatOpenAI(deployment_name="MYMODELNAME",   http_client=httpx.Client(verify=False),  temperature=0.1)

dataset = []

dataset.append(
        {
            "user_input": "When was the first super bowl?",
            "retrieved_contexts": [
            "The First AFLNFL World Championship Game was an American football game played on January 15, 1967, at the Los Angeles Memorial Coliseum in Los Angeles."
        ],
            "response": "The first superbowl was held on Jan 15, 1967"
        }
    )

evaluation_dataset = EvaluationDataset.from_list(dataset)
result = evaluate(
    llm=evaluation_llm,
    embeddings= LangchainEmbeddingsWrapper(embeddings=embeddings),
    dataset= evaluation_dataset,
    metrics=[
        Faithfulness(llm=evaluation_llm)
    ],
)

print(result)

Error trace

Evaluating:   0%|                                                                                                                 | 0/2 [00:00<?, ?it/s]Exception raised in Job[1]: APIConnectionError(Connection error.)
Evaluating:  50%|████████████████████████████████████████████████████                                                    | 1/2 [02:36<02:36, 156.27s/it]
{'faithfulness': nan}

Expected behavior

Expected scores for all the metrics thats part of evaluate

Additional context
Add any other context about the problem here.