library(Rcmdr)
Loading required package: splines
Loading required package: RcmdrMisc
Loading required package: car
Loading required package: carData
Loading required package: sandwich
Error: package or namespace load failed for ‘RcmdrMisc’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/4.0/Resources/library/png/libs/png.so':
dlopen(/Library/Frameworks/R.framework/Versions/4.0/Resources/library/png/libs/png.so, 6): Symbol not found: _inflateValidate
Referenced from: /Library/Frameworks/R.framework/Versions/4.0/Resources/library/png/libs/png.so (which was built for Mac OS X 10.13)
Expected in: /usr/lib/libz.1.dylib
in /Library/Frameworks/R.framework/Versions/4.0/Resources/library/png/libs/png.so
Error: package ‘RcmdrMisc’ could not be loaded
I'm in the process of installing Rcmdr, but I keep getting this message every time I try to type in library(Rcmdr). Please help, thank you