蛋痛的问题关于MULTIGET

代码:

Traceback (most recent call last):
  File "/home/bruce/gmbox/pages.py", line 207, in on_button_press_event
    self.gmbox.play_songs([value])
  File "/home/bruce/桌面/到 gmbox.py 的链接", line 436, in play_songs
    self.add_to_playlist(songs, False)
  File "/home/bruce/桌面/到 gmbox.py 的链接", line 534, in add_to_playlist
    self.get_songs_urls(songs, "stream")
  File "/home/bruce/桌面/到 gmbox.py 的链接", line 561, in get_songs_urls
    song.load_streaming()
  File "/home/bruce/gmbox/core.py", line 63, in load_streaming
    self.parse_node(dom.getElementsByTagName("songStreaming")[0])
IndexError: list index out of range