fontflop (installed using brew) crashing

[lonoak]

Hi,

I'm getting an error such as this:

...when converting different fonts in Mac OS X 10.15.6. Fontflop version is:

$ brew cask info fontplop
fontplop: 1.3.0
https://www.fontplop.com/
/usr/local/Caskroom/fontplop/1.3.0 (122B)
From: https://github.com/Homebrew/homebrew-cask/blob/HEAD/Casks/fontplop.rb
==> Name
Fontplop
==> Description
Open Source Webfont Converter
==> Artifacts
fontplop.app (App)
==> Analytics
install: 23 (30 days), 63 (90 days), 284 (365 days)```