plotROC | Interactive ROC plots with ggplot d3.js | Data Visualization library

I'm just trying to plot the ROC curves in a plot grid in Rstudio, the neural net models are all working but the ROC curves just won't go in a grid layout, they plot individually but there's a lot more than this and the markdown file would be like 20 pages long. I've reduced all models to two neurons as dummy-data to make it run quickly, only setwd() and the read in data lines need to be adapted.

Here's the empty plot grids:

But here you can see they work and will plot individually:

Sorry for the mess of how much code I'm posting but I'm missing one of the four ggplots using plot_grid with the package cowplot, there should be four in the grid and for some reason one of them is missing, does anyone know why?

Here's the plot_grids that are missing one of the four graphs:

Here's the error:

I'm trying to use ggplot2 using R to graph a train and test curve for the iterative error rates of a neural network. There should be two lines but I'm only seeing just the test line, does anyone know what happened? It looks like when I used head(error_df) every type is labelled as test for some reason.

Edit: even with just error_df without any subsets it's still not showing the line for the training set's error, this also includes various ranges such as error_df[2500:5000, 7500:10000,]

Here's the ggplot graph:

Here's the code and this is a link to a public google spreadsheet of the data:

I'm trying to generate a confusion table using the HMDA data from the AER package. So I ran a probit model, predict on testing set, and use table() function to generate a 2 by 2 plot, but R just returns me a long list, not showing the 2 by 2 matrix that I wanted.

Could anyone tell me what's going on>