Missing SQLite DB file?

[todd-cook]

basic install doesn't run.

pip install, then:
nr
yields:

Traceback (most recent call last):
from nr.main import main
...
line 112, in enter
return next(self.gen)
File "[.....]/p3/lib/python3.7/site-packages/requests_cache/backends/storage/dbdict.py", line 74, in connection
con = sqlite.connect(self.filename)
sqlite3.OperationalError: unable to open database file