I have Linux Mint 19.9 Tina, 64 bits, run the following:
sudo dpkg --add-architecture i386
sudo apt-get update sudo apt-get install libc6:i386 libncurses5:i386 libstdc++6:i386
sudo apt-get install multiarch-support
And the error message in picture.
I only right click in xeoma_free.app and Run as Administrator (no from a terminal) the terminal (or screen opens for second with error show in picture attached)
Thanks in advance