Hi there - it looks to me like your version of R does not have support for some graphics types, such as jpeg and png. Do you have the cairo package installed? If not, try
install.packages("cairo")
library(cairo)
If this doesn't help, I'll also mention that R 3.4.4 is old - the current version is 3.5.1, so unless you have a compelling reason not to upgrade, upgrading to 3.5.1 may be a solution for you.