Package list error in Rstudio

I've no idea about the cause of the error, but in terms of debugging, I would go down the following route:

Run

.libPaths()

to see the different directories that R looks at.

Then I would gradually build the number of directories checked up by using the R_LIBS environment variable in the .Renviron file. For example,

  • Set R_LIBS=FIRST_DIR_LIBPATHS
  • Set R_LIBS=FIRST_DIR_LIBPATHS,SECOND_DIR