I get this error trying to run the metafor package:
> Loading required package: Matrix
Error: package or namespace load failed for ‘Matrix’ in dyn.load(file, DLLpath = DLLpath, ...):
unable to load shared object '/Library/Frameworks/R.framework/Versions/4.1/Resources/library/Matrix/libs/Matrix.so':
dlopen(/Library/Frameworks/R.framework/Versions/4.1/Resources/library/Matrix/libs/Matrix.so, 0x0006): Library not loaded: @rpath/libgfortran.5.dylib
Referenced from: <8F5AFB9B-32CA-3DD9-9F39-AAEA21338301> /Library/Frameworks/R.framework/Versions/4.1/Resources/library/Matrix/libs/Matrix.so
Reason: tried: '/usr/local/lib/libgfortran.5.dylib' (no such file), '/usr/lib/libgfortran.5.dylib' (no such file, not in dyld cache)
Error: package ‘Matrix’ could not be loaded
I do not know what to do to solve it. I am running R version 4.1.2 (2021-11-01) on a Mac computer. Any ideas?