I'd say Frankenstein, and before that magical "didn't think it though" errors like The Sorcerer's Apprentice or Midas, or "didn't read the instructions" errors such as Grottasöngr[0] or 水母娘娘 and the magic whip[1].

That said, Yudkowsky seems (rightly or wrongly) to get the credit for turning this from merely fun stories into a serious (and not insane) field of study.

[0] https://en.wikipedia.org/wiki/Grottasöngr

[1] https://en.wikipedia.org/wiki/Shuimu