add mounted

lib/pages/services/old_age/old_age_support_list_page.dart

@@ -124,8 +124,10 @@ class _OldAgeSupportListPageState extends State<OldAgeSupportListPage> {
               _bracelets = (base.data as List)
                   .map((e) => BraceletListModel.fromJson(e))
                   .toList();
+              if (mounted) {
                 setState(() {});
               }
+            }
           },
           child: _bracelets.isEmpty
               ? _emptyWidget()