I want to use the "readxl" package. But every time I try it says I dont have the "rlang" package installed. I have tried to install the package but i get this error each time:
installing the source package ‘rlang’ trying URL 'https://cran.rstudio.com/src/contrib/rlang_0.4.8.tar.gz' Content type 'application/x-gzip' length 847517 bytes (827 KB) ================================================== downloaded 827 KB * installing *source* package ‘rlang’ ... ** package ‘rlang’ successfully unpacked and MD5 sums checked ** using staged installation ** libs xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun ERROR: compilation failed for package ‘rlang’ * removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/rlang’ Warning in install.packages : installation of package ‘rlang’ had non-zero exit status The downloaded source packages are in ‘/private/var/folders/x9/kf9z5_h5525bh3fdrf1dnsm00000gn/T/RtmptThXSw/downloaded_packages’
Thanks in advance!