when im trying to install packages after upgrading to Mac OsX Catalina, I always get the following error message:
I already checked many of the other thread about the same issues and tried the proposed solutions but nothing worked. I dont have any firewall or proxies which could block the connection, as proposed by some threads. I disabled the secure download methods for http in global options and I tried different cranMirrors. Also I tried to install.packages adding repos="http://cran.rstudio.com/".
Do you have any other suggestions? Do you have to change some settings in Mac OsX Catalina?
MacOsX Version: 10.15.4
R.Studio Version: 1.2.5033
Thanks a lot in advance!