Well...that's the thing, today I downloaded a game called "Familiars Training" ... the problem is that when I start playing, I get the warning screen and when I pass the screen, I get a message saying "TypeError Undefined is not a Function"...if anyone played this game could you help me solve the problem?

What's the game about?

If the game I've just googled is the right one, it seems like a game set in the Zero no Tsukaima school where you have Lust from Fullmetal Alchemist as a familiar. Except she has some power that lets her make copies of people, and the closer you are to the real person, the more obedient the copy is to you. That's what the game says anyway, I got it loaded and it's only on a version 0.15, and has basically nothing in it except some basic sex scenes with Lust and nothing else to actually do.
As for the error, I'm not sure what's up with it. The game is in RPG Maker MV, and runs perfectly fine on my computer.

www.patreon.com/user?u=3340508
I downloaded it from here, but I don't know if this is what they're talking about.