Update generator

app.py

@@ -161,7 +161,14 @@ async def generate_saved_endpoint(
                 enable_fiddler=enable_fiddler,
                 target_difficulty=difficulty,
             )
-            all_mcqs.update(mcqs)  
+            for qid, qobj in mcqs.items():
+                if qid not in all_mcqs:
+                    all_mcqs[qid] = qobj
+                else:
+                    if isinstance(all_mcqs[qid], list):
+                        all_mcqs[qid].append(qobj)
+                    else:
+                        all_mcqs[qid] = [all_mcqs[qid], qobj]
 
         except Exception as e:
             raise HTTPException(status_code=500, detail=f"Generation from saved file failed: {e}")