Installation issue on Mac OS 10.15

[MooersLab]

The install fails on this step:

sudo jupyter-serverextension enable notebook_snippets
Enabling: notebook_snippets

• Writing config: /Users/blaine/.jupyter
  • Validating...
    Error loading server extension notebook_snippets
    X is notebook_snippets importable?

jupyter-serverextension enable notebook_snippets  ✔ at 11:44:32
Enabling: notebook_snippets

• Writing config: /Users/blaine/.jupyter
  • Validating...
    Error loading server extension notebook_snippets
    X is notebook_snippets importable?

It is not importable:

Traceback (most recent call last):
File "", line 1, in
File "/Users/blaine/Library/Python/3.8/lib/python/site-packages/notebook_snippets/init.py", line 5, in
from .snippets import snippets
File "/Users/blaine/Library/Python/3.8/lib/python/site-packages/notebook_snippets/snippets.py", line 2, in
from .code import numba, python, python_regex
ModuleNotFoundError: No module named 'notebook_snippets.code'

notebook_snippets.code is not being found.

ls /Users/blaine/Library/Python/3.8/lib/python/site-packages/notebook_snippets

init.py pycache _version.py api ping.py snippets.py

ls .jupyter