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
*** moving datasets to lazyload DB
** 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