Tried installing devtools package, this is what comes at the end of console message.
I need to upgrade processx to 3.4.0 from 3.3.1 but don't know how to go about it
- installing source package 'callr' ...
** package 'callr' successfully unpacked and MD5 sums checked
** using staged installation
** R
** inst
** byte-compile and prepare package for lazy loading
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
namespace 'processx' 3.3.1 is being loaded, but >= 3.4.0 is required
Calls: ... namespaceImportFrom -> asNamespace -> loadNamespace
Execution halted
ERROR: lazy loading failed for package 'callr'
- removing 'C:/Users/Khandoba Salunkhe/Documents/R/win-library/3.6/callr'
Warning in install.packages :
installation of package ‘callr’ had non-zero exit status
I tried installing processx seprately and got this error
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
namespace 'processx' 3.3.1 is being loaded, but >= 3.4.0 is required
Calls: ... namespaceImportFrom -> asNamespace -> loadNamespace
Execution halted
ERROR: lazy loading failed for package 'callr'
Can anyone help? TIA