Launch FreeCAD 0.19 with AppImage on Lubuntu

Hello everyone,
I'm new to Linux, I use Lubuntu 20.04 and I have a problem to launch the AppImage of FreeCAD.
I dowloaded development version 0.19-24267 in AppImage format and I checked the box to make the file executable. When I click on AppImage file everything seems to be going well.
Then, GUI appears but closes after a few seconds. I noticed that it closes faster when I click somewhere. If I click while it is running, it closes almost instantly.
I don't have many leads to solve my problem. Thank's in advance if you have some.