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Error in install.packages : Updating loaded packages

WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:

/bin/windows/Rtools/

Installing package into ��C:/Users/10539/Documents/R/win-library/4.0��

(as ��lib�� is unspecified)

解决措施

我是在rmarkdown里用

install.packages("DT")install.packages("dygraphs")

这个出的错，别用rmarkdown安装包，换成

console这里，在这里用安装的命令即可。