I am receiving the following error while executing KLdiv method:

kl<-KLdiv(y)
Error in function (classes, fdef, mtable)  :
  unable to find an inherited method for function "KLdiv", for signature
"data.frame"

the code is as follows:
require(flexmix)
KLdiv(y)

I tried searching in the R mail archives but could not get any convincing
answer.
Please help.
Thanks!

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