Fixed json response and incorrect datetime import

svc/router.py

@@ -1,4 +1,4 @@
-import datetime
+from datetime import datetime, timedelta
 from fastapi import APIRouter, HTTPException, Depends
 import logging
 
@@ -146,7 +146,8 @@ def deep_eval_suite(request: DeepEvalSuiteRequest):
     threading.Thread(target=run_in_background, daemon=True).start()
 
     # ✅ Immediately respond
-    return {"results": "Evaluation started in background"}
+    return TaskResponse(results={"status": "Evaluation started in background"})
+