How do I fix this so I can load Rcmdr? Im using a Macbook and have the latest version of R. This is what pops up:
Loading required package: RcmdrMisc
Loading required package: car
Error: package or namespace load failed for ‘car’ in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
there is no package called ‘openxlsx’
Error: package ‘car’ could not be loaded