The SES Cloud Installer for a Mac running Big Sur fails for a seemingly unknown reason and may not even get past the initial launch of the installer before throwing an exception.
If you downloaded the SES Full installation package creator for Mac, and ran it on a pre-Catalina version of macOS, the package created will be suitable only for pre-Catalina versions of macOS and that package will fail to run on Big Sur.
Release : 14.3+
Component : Mac Big Sur.
Download and run the SES Online installation package for Mac—it will run on any supported macOS version and install the newest compatible SES version for that OS. Or use a package create on a similar macOS version using the Full installation package creator. See SES Mac client version downloaded and installed depends on macOS version