Here is the code I use:

install.packages("DatastreamDSWS2R")

library(DatastreamDSWS2R)

Error: package or namespace load failed for ‘DatastreamDSWS2R’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]): namespace ‘rlang’ 0.4.6 is already loaded, but >= 0.4.10 is required

And I also tried the the development version, not working as well:

require(devtools)

install_github("CharlesCara/DatastreamDSWS2R")

library(DatastreamDSWS2R)

Errors:

Loading required package: devtools

package �devtools� was built under R version 4.0.5Loading required package: usethis

package �usethis� was built under R version 4.0.5Error: package or namespace load failed for �usethis� in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):

namespace �rlang� 0.4.6 is already loaded, but >= 0.4.10 is required

Failed with error: ‘package ‘usethis’ could not be loaded’

Error in install_github("CharlesCara/DatastreamDSWS2R") :

could not find function "install_github"