Namespace in Imports field not imported from: ‘methods’
  All declared Imports should be used.
Undeclared package ‘readr’ in Rd xrefs
Namespace in Imports field not imported from: ‘methods’
  All declared Imports should be used.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.2/xpose.nlmixr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.2/xpose.nlmixr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.1/xpose.nlmixr.Rcheck/00install.out’ for details.
Installation failed.
See ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.1/xpose.nlmixr.Rcheck/00install.out’ for details.