diff --git a/service/utils/tds.py b/service/utils/tds.py
index bbca5e2..ca71975 100644
--- a/service/utils/tds.py
+++ b/service/utils/tds.py
@@ -191,8 +191,16 @@ def attach_files(output: dict, job_id, status="complete"):
         files[output_filename] = "result.csv"
 
     risk_result = output.get("risk", None)
+    print("Tom")
+    print(risk_result)
     if risk_result is not None:
-        json_obj = json.loads(json.dumps(risk_result, default=str))
+        # Update qoi (tensor) to a list before serializing with json.dumps
+        for k, v in risk_result.items():
+            risk_result[k]["qoi"] = v["qoi"].tolist()
+        risk_json_obj = json.dumps(risk_result, default=str)
+        print(risk_json_obj)
+        json_obj = json.loads(risk_json_obj)
+        print(json_obj)
         json_filename = os.path.join(job_dir, "./risk.json")
         with open(json_filename, "w") as f:
             json.dump(json_obj, f, ensure_ascii=False, indent=4)