Hi, and welcome!
Thanks for including your code. It would be more helpful if it were in the form of a reproducible example, called a reprex, especially because it's hard to know where to look for the Kans corpus.
Also, it's better not to use install.packages. A better alternative is to leave the choice to the tester with
require(tm")
require(SnowballC)
require(wordcloud)
require(RColorBrewer)
require "corpus)
require(gdata)
I'll look for a suitable corpus and see if I can find a way to get the object you need.