* installing *source* package ‘Rblpapi’ ...
** package ‘Rblpapi’ successfully unpacked and MD5 sums checked
** using staged installation
Unknown architecture: arm64. Exiting.
ERROR: configuration failed for package ‘Rblpapi’
* removing ‘/Volumes/Builds/packages/big-sur-arm64/results/4.4/Rblpapi.Rcheck/Rblpapi’