"OpenCore-Patcher quit unexpectedly" when trying to open on El Capitan

I'm trying to get Ventura on an iMac 7,1, and every time I open it, this error pops up. This maxes out at El Capitan, and it isn't supported by the Catalina and High Sierra patcher. I cannot use another Mac, as this is the only Mac I have. It doesn't give any other details.