* ERROR: The condition <FontBakeryCondition:hinting_stats> had an error: OSError: Could not find the libc shared library
       File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/fontbakery/checkrunner.py", line 401, in _evaluate_condition
         return None, condition(**args)
       File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/fontbakery/callable.py", line 102, in __call__
         return self.__wrapped__(*args, **kwds)
       File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/fontbakery/profiles/googlefonts_conditions.py", line 280, in hinting_stats
         from ttfautohint import ttfautohint, libttfautohint
       File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/ttfautohint/__init__.py", line 13, in <module>
         from ttfautohint import memory
       File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/ttfautohint/memory.py", line 18, in <module>
         raise OSError("Could not find the libc shared library")