我不确定这里发生了什么，但插入符号包未正确安装。我意识到之前已经发布过类似的问题，但我不知道。
install.packages("caret")
library(caret)
Error: package or namespace load failed for ‘caret’ in get(Info[i, 1], envir = env):
cannot open file 'C:/Users/John Compton/Documents/R/win-library/3.6/MASS/R/MASS.rdb': No such file or directory
所以我一直在努力解决这个问题。我已经完全更新了R 3.6.1，我还运行了类似的东西，就像install.packages（“ caret”，repos =“ cran / ....”，c =（“ Dependencies”，“建议”））耗时约30分钟，并且像每个建议的软件包一样进行安装，因此我不知道可能是什么错误。如何解决此程序包中的错误？
编辑：包括install.package调用
> install.packages("caret")
Installing package into ‘C:/Users/John Compton/Documents/R/win-library/3.6’
(as ‘lib’ is unspecified)
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.6/caret_6.0-84.zip'
Content type 'application/zip' length 6237886 bytes (5.9 MB)
downloaded 5.9 MB
package ‘caret’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\John Compton\AppData\Local\Temp\RtmpGuKafa\downloaded_packages
>