uniPlot function in MVN package cannot work

package-installation

#1
> library(MVN)
sROC 0.1-2 loaded
Warning message:
package ‘MVN’ was built under R version 3.4.4 
> uniPlot(X, type=c("qqplot"))
Error in uniPlot(X, type = c("qqplot")) : 
  could not find function "uniPlot"

install_version("MVN", version = "5.1", 
                repos = "http://cran.us.r-project.org")
library(MVN)

I am trying to do my assignments by using MVN package. The question is, Rstutio can load the MVN package, but the uniPlot function in this package does not work. The hzTest in this package did not work either. After all students talked in the class, it looks like we need a old version of MVN package, so it should be OK to use those functions, otherwise, we cannot.
I was also trying to install an old version, but it did not work either. Could some one can help me to figure out it?

MVN package has a new version is 5.4, and I have tried 5.0 and 4.0 but they did not work.


#2

MVN has deprecated uniPlot(), which is why it can't find the function.

It looks like the last version of MVN with uniPlot() is 4.0.2

If you're just looking to make a qqplot, there are lots of options for doing that (including with base R)

(The car package mentioned in the article above has a bunch of other plotting functions that might be relevant as well).