Comment 1 for bug 2028312

error when trying trying to validate a desktop file running spec 1.5:

$ desktop-file-validate Applications/squashfs-root/org.keepassxc.KeePassXC.desktop
Applications/squashfs-root/org.keepassxc.KeePassXC.desktop: error: value "1.5" for key "Version" in group "Desktop Entry" is not a known version
Applications/squashfs-root/org.keepassxc.KeePassXC.desktop: hint: value item "Security" in key "Categories" in group "Desktop Entry" can be extended with another category among the following categories: Settings, or System
Applications/squashfs-root/org.keepassxc.KeePassXC.desktop: error: file contains key "SingleMainWindow" in group "Desktop Entry", but keys extending the format should start with "X-"