unable to access index for repository http://www.omegahat.net/R/bin/windows/contrib/4.1:
cannot open URL 'http://www.omegahat.net/R/bin/windows/contrib/4.1/PACKAGES'
Package which is only available in source form, and may need compilation of
C/C++/Fortran: ‘RDCOMClient’
library(RDCOMClient)