dndscv Error: can't change refdb file

Question

[1035655101]

I want to find driver mutations so I am trying to use dndscv tool. But, I am permanently getting this error

library(dndscv)
Warning message:
replacing previous import ‘Biostrings::translate’ by ‘seqinr::translate’ when loading ‘dndscv’

data("dataset_simbreast", package="dndscv")
dndsout = dndscv(mutations, refdb="refcds_hg19.rda", cv=NULL)
[1] Loading the environment...
Error in readChar(con, 5L, useBytes = TRUE) : cannot open the connection
In addition: Warning message:
In readChar(con, 5L, useBytes = TRUE) :
  cannot open compressed file 'refcds_hg19.rda', probable reason 'No such file or directory'

But, 'refcds_hg19.rda' is present.

Does anyone know how I can solve this error?