plotRanges didn't work In that version 4.0.0, and need the help for that, thank you alotv

I think this function definition is what you are looking for:

plotRanges <- function(x, xlim=x, main=deparse(substitute(x)),
                         col="black", sep=0.5, ...)
   {
     height <- 1
     if (is(xlim, "IntegerRanges"))
       xlim <- c(min(start(xlim)), max(end(xlim)))
       bins <- disjointBins(IRanges(start(x), end(x) + 1))
       plot.new()
       plot.window(xlim, c(0, max(bins)*(height + sep)))
       ybottom <- bins * (sep + height) - height
       rect(start(x)-0.5, ybottom, end(x)+0.5, ybottom + height, col=col, ...)
       title(main)
       axis(1)
}

I just copy-pasted it from this document: https://bioconductor.org/packages/devel/bioc/vignettes/IRanges/inst/doc/IRangesOverview.pdf. I saw this function used in an online book by R. Irizarry and M. Love http://genomicsclass.github.io/book/pages/bioc1_igranges.html. However, this function does not belong to any specific Bioconductor package (but I may well be wrong). The function behavior closely mimicks the function used in the online book.

Hope this helps.