I am not able to install or update any packages in R studio version 1.1.383. I am on macOS Mojave. This is the error message I get when I try to download or update any packages.
Warning in strptime(xx, f <- "%Y-%m-%d %H:%M:%OS", tz = tz) :
unknown timezone 'zone/tz/2019c.1.0/zoneinfo/America/Montreal'
installing source package ‘cansim’ ...
** package ‘cansim’ successfully unpacked and MD5 sums checked
** R
** data
*** moving datasets to lazyload DB
** inst
** preparing package for lazy loading
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
namespace ‘Rcpp’ 0.12.13 is being loaded, but >= 1.0.0 is required
ERROR: lazy loading failed for package ‘cansim’
removing ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/cansim’
Warning in install.packages :
installation of package ‘cansim’ had non-zero exit status
I would try to install first package Rcpp because you have an error namespace ‘Rcpp’ 0.12.13 is being loaded, but >= 1.0.0 is required
If this does not work (what is probable if you can't install any package) I can not help you further because I am not familiar with your operating system.
I see that your version of RStudio is not very current. Is it possible to update to a newer version?
For anyone advising you it would also be interesting to know your version of R.