[JimmXinu]

Due to AO3 not letting you see stories depending on rating if you're not logged it, FanFicFare has code to log in even for 'get urls' for AO3 pages.

The error message is telling you what's wrong: you don't have your AO3 user/pass set right in that library. personal.ini settings are library specific, so you have to set them in each library you want to use this with.

Originally Posted by goldenspider

I'm unable to retrieve URLs from the Get Story URLs from Web Page function,
while in my main Library. I end up with the following error message:

calibre, version 2.16.0
ERROR: Unhandled exception: <b>FailedToLogin</b>:Failed to Login for URL: (http://archiveofourown.org/series/16566) with username: (myusername)
...
http://archiveofourown.org/works/321...=true#comments

The 'show_comments' URL is being shown because of cryzed's changes that deliberately take the longest URL for a story. They'll still work, they just look a bit odd.