After you install Lianja App Builder on linux you will notice two icons have been added to the desktop "Lianja App Builder" and "Lianja App Center".

If you use Ubuntu 19.04 or GNOME 3.32, these will be displayed as ".desktop" files on the desktop. The .desktop file may not launch at all. You should right click on the .desktop file and select “Allow Launching”.

After this, you should be able to launch the application and the application shortcut should be displayed properly on the desktop.

The screenshot below shows you the "Lianja App Builder" after "Allow launching".

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