Update app/main.py

app/main.py

@@ -29,8 +29,8 @@ app = FastAPI(
 app.include_router(api_router, prefix="/api/v1")
 
 
-@app.get("/health", tags=["Health"], response_model=None)
-async def health_check() -> Dict[str, Any]:
+@app.get("/health", tags=["Health"])
+async def health_check() -> JSONResponse | Dict[str, Any]:
     checks: Dict[str, bool] = {"mongo": False, "openai": False}
     errors: Dict[str, str] = {}