ImportError: cannot import name 'unquote'

[MrJeremyHobbs]

I get the following error when trying to run for the first time:

from yarl import URL, unquote

ImportError: cannot import name 'unquote'

Looking at the web, it seems to be an issue with a recent update to the yarl module. Downgrading the yarl version in the requirements.txt file to yarl==0.18.0 seems to work.

See link: aio-libs/aiohttp#2662