I have updated my version of R (3.6.1) on Mac OS X El capitan 10.11.4
Since this, there are a lot of packages that I cannot use anymore.
For instance e1071 (cf attached picture)
I always get the same error message for a lot of other packages.
I don't really know what to do.
I have tried to uninstall R and reinstall it but it stays the same.