lxctk install failed

[rescuz]

Hi,I have a problem when i installed the lxck packages in my Rstudio:WARNING: Rtools is required to build R packages, but is not currently installed.

Please download and install Rtools 3.5 from http://cran.r-project.org/bin/windows/Rtools/.
Downloading GitHub repo lixiangchun/lxctk@master
lixiangchun-lxctk-ea74021/R/plot.mutational.processes.R: truncated gzip input
tar.exe: Error exit delayed from previous errors.
Error: Failed to install 'lxctk' from GitHub:
Does not appear to be an R package (no DESCRIPTION)
In addition: Warning messages:1: In utils::untar(tarfile, ...) :
‘tar.exe -zxf "C:\Users\ZENGBING\AppData\Local\Temp\Rtmp0Wvgo2\file5f5862db3611.tar.gz" -C "C:/Users/ZENGBING/AppData/Local/Temp/Rtmp0Wvgo2/remotes5f5865af11c1"’ returned error code 1
2: In system(cmd, intern = TRUE) :
running command 'tar.exe -ztf "C:\Users\ZENGBING\AppData\Local\Temp\Rtmp0Wvgo2\file5f5862db3611.tar.gz"' had status 1

Could you give me some advice?Any help is appreciated!