> What application are you trying to start that uses ksystraycmd? The systray
> system changed and that command is not available anymore. Plasma-workspace
> includes xembedsniproxy that enables old system tray icons.
>
> https://lists.debian.org/debian-kde/2016/06/msg00087.html
>
> --
> Sami Erjomaa
thanks :
applications : Kontact when i want to open an link which open firefox and if i want to open firefox by a kde menu.