Traceback (most recent call last):


 "/usr/local/bin/spotdl", line 5, in <module>

from spotdl.spotdl import main


 "/usr/local/lib/python3.7/site-packages/spotdl/spotdl.py", line 14, in <module>

from spotdl import youtube_tools


 "/usr/local/lib/python3.7/site-packages/spotdl/youtube_tools.py", line 3, in <module>

import pafy


 "/usr/local/lib/python3.7/site-packages/pafy/__init__.py", line 7, in <module>

from .pafy import new


 "/usr/local/lib/python3.7/site-packages/pafy/pafy.py", line 52, in <module>

"pafy: youtube-dl not found; you can use the internal backend by "
ImportError: pafy: youtube-dl not found; you can use the internal backend by setting the environmental variable PAFY_BACKEND to "internal". It is not enabled by default because it is not as well maintained as the youtube-dl backend.

Traceback (most recent call last):


 "test_spatial_narrow_as_op.py", line 29, in <module>

import detectron.utils.c2 as c2_utils
ImportError: No module named 'detectron'
