Desktop Entry icon not appearing: how to diagnose?

[kqlnut]

here is are the ownership, permissions, location and content.

Code:

mobian@mobian:/usr/share/applications$ la -l | grep dark
-rw-r--r-- 1 root root   270 Mar 14 11:15 dark-light.desktop
mobian@mobian:/usr/share/applications$ cat dark-light.desktop
[Desktop Entry]
Actions=Light;Dark;
Type=Application
Name=Day-Night
GenericName=Theme Switch
Comment=Theme Switch
Icon=contrast
TryExec=gsettings
Exec=notify-send ThemeSwitcher "Long Press for Theme Color Options"
Terminal=false
Categories=Settings;Theme;Colors;Session

Seems like you just didn't notice that the code window in the thread you copied the code from is scrollable and there is more code below. I also didn't notice it when I first looked at it because the scroll bar only appeared when I tried to scroll.