"stlink" is required on OSX, please install using Homebrew ( brew install stlink ) or MacPorts ( sudo port install stlink ). For more information see https://brew.sh or https://www.macports.org
The drivers for the programming adapter "ST-LINK" were not found, do you want me to install them now?
The driver installation has started in another window, please follow the instructions. If you can't see the installation window check for an icon flashing in the taskbar asking for permissions. If you would rather download and install the drivers yourself you can do so here:
https://www.st.com/en/development-tools/stsw-link009.html