I am on Linux Mint with a totally fresh install, and I am unable to launch games in Heroic. I have installed a bunch from Gog and Epic but when I try to launch them, it says "Launching" and then nothing happens. I have the latest version: 2.19.1
The root cause of the issue is that you have home dir encryption enabled. Umu tries to atomically interchange a folder when installing the Steam runtime, which does not work with the encryption implementation Mint uses. This binary adds a fallback to umu to use a normal move operation