Why can't I install CMSclassifier?

[Qing123456-luo]

I have tried a lot of times, and every time I got the folowing error: #############

install_github("Sage-Bionetworks/CMSclassifier") Downloading GitHub repo Sage-Bionetworks/CMSclassifier@HEAD WARNING: Rtools is required to build R packages, but is not currently installed.

Please download and install Rtools custom from https://cran.r-project.org/bin/windows/Rtools/. √ checking for file 'C:\Users\Luoqq3\AppData\Local\Temp\Rtmp2xOSCV\remotes1ea822ef7f21\Sage-Bionetworks-CMSclassifier-ba02ec5/DESCRIPTION' (500ms)

• preparing 'CMSclassifier': √ checking DESCRIPTION meta-information ...

• checking for LF line-endings in source and make files and shell scripts

• checking for empty or unneeded directories

• building 'CMSclassifier_1.0.0.tar.gz'

• installing source package 'CMSclassifier' ... using staged installation R ** data * moving datasets to lazyload DB byte-compile and prepare package for lazy loading 错误: (由警告转换成)程辑包'randomForest'是用R版本4.0.2 来建造的 停止执行 ERROR: lazy loading failed for package 'CMSclassifier'

• removing 'D:/R language/R/R-4.0.0/library/CMSclassifier' 错误: Failed to install 'CMSclassifier' from GitHub: (由警告转换成)installation of package ‘C:/Users/Luoqq3/AppData/Local/Temp/Rtmp2xOSCV/file1ea86a6a4406/CMSclassifier_1.0.0.tar.gz’ had non-zero exit status ############# I don't know what's wrong. Could anyone help me?

[cloudbroken]

I don't think anyone is maintaining this package, so you may not get much help here. The CMSclassifier package is actually pretty simple, it is a few functions and some data. You might have more luck if you look at the R code and just run the functions yourself.