You might have something else causing this issue…
I’ve setup a VM of Mint 19.2 fresh, fritzing DID NOT execute the install script properly, in-fact that failed miserably. BUT the fritzing application 0.94. Downloaded from GitHub, it does run and seems to work just fine with 0.9.4. So this might be more of a specific issue with this individuals system.
I’ll keep this VM around for a bit if something else needs tested with mint… IE; install script.