hi rensa ,
i tried installing packages using the repos , but still i get the same error ,
install.packages('dplyr', repos = '"https://cloud.r-project.org')
Warning in install.packages :
unable to access index for repository
cannot open URL
Installing package into
(as ‘lib’ is unspecified)
Warning in install.packages :
unable to access index for repository
scheme not supported in URL
Warning in install.packages :
package ‘dplyr’ is not available (for R version 3.4.3)
Warning in install.packages :
unable to access index for repository
scheme not supported in URL
i aslo tried finding the default repo , then it shows :
getOption('repos')
CRAN CRANextra
" cran.rstudio." "http://www.stats.ox.ac.uk/pub/RWin "
attr(,"RStudio")
[1] TRUE