Traceback (most recent call last):


 "/usr/lib/python3.8/site-packages/gi/overrides/Gtk.py", line 1218, in __new__

return TreePath.new_from_string(path)
TypeError: constructor returned NULL


Traceback (most recent call last):

 "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner
self.run()

 "/usr/lib/python2.7/threading.py", line 763, in run
self.__target(*self.__args, **self.__kwargs)

 "/usr/lib/python2.7/site-packages/doubanfm/controller/main_controller.py", line 154, in _watchdog_time
self.view.display()

 "/usr/lib/python2.7/site-packages/doubanfm/views/main_view.py", line 58, in display
self.set_dal()

 "/usr/lib/python2.7/site-packages/doubanfm/views/main_view.py", line 27, in set_dal
dal = MainDal(self.data)

 "/usr/lib/python2.7/site-packages/doubanfm/dal/dal_main.py", line 40, in __init__
self.song_total_time = playingsong['length']
TypeError: 'NoneType' object has no attribute '__getitem__'