UnboundLocalError: cannot access local variable 'encoding' where it is not associated with a value

I used the following command below on command prompt, and it gives the following error in the title (and in the image provided below). Is there anyway to fix it?

[The command used] facebook-scraper john.doe --cookies "D:\fbcookies.txt" -s "10" --encoding UTF-8 --comments --reactions --reactors --extra-info --use-youtube-dl --profile --friends 920 --source --dump "D:[FB]johndoe" --verbose