sleep 1 waiting for API upload image successfully

backstage/utils/routes.py

@@ -65,6 +65,7 @@ def update_manage_table(forms, req_args, files, img_type):
         'http://127.0.0.1:5000/api/manages/data?page={}&section={}'.format(
             req_args.get('page'), req_args.get('section_class')), json=update_data)
     if response.status_code == 200:
+        sleep(1) # waiting for API upload image successfully.
         flash('修改成功', 'success')
     else:
         flash('修改失敗', 'danger')