Unknown Google TTS issue: Library "c" not found

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~ Unknown Google TTS issue: Library "c" not found.
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~ Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/init.py", line 378, in getattr
return getattr(self._module, name)
AttributeError: 'NoneType' object has no attribute 'unschedule'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/athena/brain.py", line 222, in run
text = stt.active_listen()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/athena/stt.py", line 66, in active_listen
tts.play_mp3('double-beep.mp3')
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/athena/tts.py", line 51, in play_mp3
sound.play()
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/media/sources/base.py", line 269, in play
player.queue(self)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/media/player.py", line 103, in queue
self._set_playing(self._playing)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/media/player.py", line 130, in _set_playing
pyglet.clock.unschedule(self.update_texture)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/init.py", line 384, in getattr
import(import_name)
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/clock.py", line 169, in
_c = pyglet.lib.load_library('c')
File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pyglet/lib.py", line 158, in load_library
raise ImportError('Library "%s" not found.' % names[0])
ImportError: Library "c" not found.

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