Traceback (most recent call last):


 "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main

"__main__", mod_spec)


 "/usr/lib/python3.5/runpy.py", line 85, in _run_code

exec(code, run_globals)


 "./__main__.py", line 68, in <module>

main()


 "./__main__.py", line 61, in main

from kitty.main import main


 "./kitty/main.py", line 11, in <module>

from .borders import load_borders_program


 "./kitty/borders.py", line 8, in <module>

from .fast_data_types import (
ImportError: ./kitty/fast_data_types.so: undefined symbol: hb_ft_font_changed

Traceback (most recent call last):


 "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main

"__main__", mod_spec)


 "/usr/lib/python3.6/runpy.py", line 85, in _run_code

exec(code, run_globals)


 "/root/demucs/demucs/__main__.py", line 19, in <module>

from .compressed import StemsSet, build_musdb_metadata, get_musdb_tracks


 "/root/demucs/demucs/compressed.py", line 10, in <module>

import musdb


 "/root/.local/lib/python3.6/site-packages/musdb/__init__.py", line 1, in <module>

from .audio_classes import MultiTrack, Source, Target


 "/root/.local/lib/python3.6/site-packages/musdb/audio_classes.py", line 2, in <module>

import soundfile as sf


 "/root/.python/python3.6/dist-packages/soundfile.py", line 17, in <module>

from _soundfile import ffi as _ffi


 "/root/.python/python3.6/dist-packages/_soundfile.py", line 2, in <module>

import _cffi_backend
ImportError: libffi-806b1a9d.so.6.0.4: cannot open shared object file: No such file or directory
