Error in clust as it is an unused argument

I try to run this example:

library(bibliometrix)
download.file("https://www.bibliometrix.org/datasets/joi.zip", destfile = temp<-tempfile())
M <- convert2df(readLines(unz(temp, "joi.txt")), dbsource="isi",format="plaintext")
CS <- conceptualStructure(M, method="MCA", field="ID", minDegree=10, clust=5, stemming=FALSE, labelsize=8,documents=20)

but I receive this error:

Error in conceptualStructure(M, method = "MCA", field = "ID", minDegree = 10,  : 
  unused argument (clust = 5)

What should change?