Hey! I'm really truly enjoying The Pretenders Guild! I've never wanted to actually complete a visual novel. Usually I just play the "good endings" and then move on to the next, but I find that I actually want to complete this one.
However, after unlocking all the secret routes and getting ready to get Ending 8 (which is the only one I am missing at the moment) I got this error.
It popped up both in Scene 2 and Scene 6 making it impossible for me to complete it, since I can't progres after this pops up. I saw that someone else mentioned something about Nonbinary not defined, but thought this might help you figure out what the problem is easier.
It's an incredibly good Visual novel, and I hope that I can one day see Ending 8, but I am already blown away by it as it is now! :)