voice-gender VS Empirical_Study_of_Ensemble_Learning_Methods

Hey y'all. I discovered the aforementioned app (What is Your Voice Gender? ) a while back and thought it was super cool. Recently I've been ramping up my voice work and went to use this app again, but any file I try to input results in an error (see a photo here) that makes it unusable. Recalling this was a personal project for the creator, I went searching for the project code in Github and found it here. I realized that despite the web app showing an error, it was kinda easy to go into RStudio myself and get the predictions without an error. I saw another user in the comments of a recent post experiencing this same issue, so I figured I'd just write out the steps to my DIY fix that worked, in case anybody else is having issues and would like to try this fix:

I've actually made the same kind of graph before. In this image: each point is the average of 5 out-of-fold predictions for one trial of k-fold cross-validation. I repeated the procedure 40 times to visualize the out-of-fold accuracy on the Wisconsin diagnostic breast cancer data set (560 observations on 30 numeric variables). I evaluated 14 models for classification: