新 Rmd 文档：knitr：库中的错误（“rstudio”）：没有名为“rstudio”的包

Question

firing up "RStudio" V1.0.136 on my Mac, just as usual, creating a new file, a Rmd, and trying--as I've done countless time before--knitr it just as is, but this time a strange error message occurs:

Error in library("rstudio") : there is no package called 'rstudio'

Never ever have seen this before, and I haven't got the faintest clue as why this has popped into existence, and how to remedy it.

Answer 1

有趣的是，在擦除我的整个 RStudio 和 R 安装后，随后重新安装，一切又正常了。