I sent this on Ex-Twitter, but it seems like an inactive account, so I'll drop it here too.
Ran into an exception after completing all the little mini-puzzles, after the thread pulled through. Here's the output. in pastebin form. https://pastebin.com/u9b84juh Seems like an easy one to patch up.
The first time I played the ending, I thought that was the last thing because that was on the terminal when the game closed after winning. I played it again and did everything except one puzzle then quit, and that error was on the terminal that time as well, so I think it was non-fatal and unrelated. The game did just kind of close after winning though, didn't drop me back to the menu, or give me credits, like most do.