why my plots are opening in new window and without labels?

[sharmachetan]

Hello, if someone can please help me with labels and why plots are opening in new window. I tried dev.off() in console, but it is not working.
Here is code:

df <- read.csv("C:/Users/Documents/my_table.csv", stringsAsFactors = F)
colnames(df)[1] = "sample_name"
library(FactoMineR)
library(prettyGraphs)
#> Warning: package 'prettyGraphs' was built under R version 3.5.2
library(ExPosition)
#> Warning: package 'ExPosition' was built under R version 3.5.2
ca.ex <- epCA(df[-1], graphs = F, hellinger = T, symmetric = F)
epGraphs(ca.ex)
#> **ExPosition plotting data**
#> *Contains the following objects:
#> 
#>   name           description                           
#> 1 "$fi.col"      "The colors for the row items."       
#> 2 "$fi.pch"      "The pch values for the row items."   
#> 3 "$fj.col"      "The colors for the column items."    
#> 4 "$fj.pch"      "The pch values for the column items."
#> 5 "$constraints" "Plotting constraints for axes."

^{Created on 2020-06-14 by the reprex package (v0.3.0)}