Gant Project don't run / Gantt Project ne démarre pas


After installing Gantt Project 3.2.3240, the software don’t run. I use Java Version 1.8.
Somebody have an idea ?
Thanks fo your help.

Après installation, Gantt Project 3.2.3240 le logiciel ne se lance pas. J’utilise Java Version 1.8.
Avez-vous une idée ?
Merci de votre aide.

GanttProject requires Java 11+, it is written in the system requirements on the download page: GanttProject - Download

Our packages for Windows and macOS are bundle with Java Runtime, so if you’re on Windows/macOS, we highly recommend installing GanttProject using those packages and do not play with your own Java Runtime.