properly loading .env file with dotenv

services/rag/langchain/server.py

@@ -4,6 +4,7 @@ import json
 import os
 from contextlib import asynccontextmanager
 from typing import Any, Dict
+from dotenv import load_dotenv
 
 from fastapi import FastAPI, HTTPException
 from fastapi.middleware.cors import CORSMiddleware
@@ -12,6 +13,9 @@ from pydantic import BaseModel
 
 from agent import chat_with_agent, get_llm_model_info
 
+# Load environment variables
+load_dotenv()
+
 
 class QueryRequest(BaseModel):
     """Request model for the query endpoint."""