Examples don't work

[OrangeFlag]

Hello, you examples don't work and i don't now why, please help me

WARNING:root:Disabling moodbar attr, no binary found in PATH. WARNING:root:Disabling bpm attr, no binary found in PATH. Traceback (most recent call last): File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/song.py", line 116, in distance_compute return self._dist_dict[other_song] KeyError: <Song(uid=1 values=[(2,), (2,), None, ((321,), (583, 10)), None, None, ['heldentod']], distances=[])>

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "/home/yorick/Git/MusicSelectionWeb/Recommendation/Recommendation.py", line 26, in })] = idx File "/usr/lib64/python3.6/contextlib.py", line 88, in exit next(self.gen) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/session.py", line 648, in transaction self.database.rebuild() File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/database.py", line 262, in rebuild self.rebuild_stupid() File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/database.py", line 244, in rebuild_stupid distance = Song.distance_compute(song_a, song_b) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/song.py", line 128, in distance_compute distance_dict[key] = distance_func(value_a, value_b) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/distance/init.py", line 37, in call return self.compute(list_a, list_b) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/distance/init.py", line 41, in compute lefts = self._provider._lookup(lefts) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/provider/init.py", line 60, in _lookup return tuple(self._store[:idx] for idx in idx_list) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/munin/provider/init.py", line 60, in return tuple(self._store[:idx] for idx in idx_list) File "/home/yorick/Git/MusicSelectionWeb/venv/lib64/python3.6/site-packages/bidict/_base.py", line 410, in getitem return self._fwdm[key] TypeError: unhashable type: 'slice'