osx - Error installing Package in R Studio -

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i trying install sdsfoundations package r studio in mac getting error.

install.packages("~/downloads/sdsfoundations_1.3.tar", repos = null) error in install.packages : type == "both" cannot used 'repos = null'

also tried following:

install.packages("~/downloads/sdsfoundations_1.3.tar", repos = null, type ='binary') tar: failed set default locale

any ideas?

thanks


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