Update app.py

app.py

@@ -43,7 +43,7 @@ def create_solutions(image_urls, all_bboxes, all_bboxes2, all_segments):
             flattened_segmnt = [item for sublist in subsegmnt for item in sublist]
 
             ans = {"image_id": img_id, "id": box_id, "area": area, "category_id": cat_id, "bbox": subbox, "segment": flattened_segmnt}
-            obj ={"url": image_url, "answer":ans}
+            obj ={"url": image_url, "answer":[ans]}
             solutions.append(obj)
             box_id += 1
         img_id += 1