change backup url

tasks/crawler_channel_account_videos.py

@@ -43,7 +43,7 @@ class CrawlerChannelAccountVideos:
             continue_flag = response_data['continueFlag']
             video_list = response_data['object']
             for video in video_list[:1]:
-                video_id = video['id']
+                video_id = str(video['id'])
                 account_name = video['nickname']
                 object_desc = video['objectDesc']
                 publish_timestamp = video['createtime']