Anyone experienced and Solved this problem already ? , I'm having a trouble with my kali linux ,

there is no wallpaper and icons in my desktop ( but last time i used it , there's a lot of files i put in my desktop ) but there is no anything now .. and i cant right click it too , to edit background , go to panel , etc etc , the 2 panel (toolbar in windows os) is working very fine . Anyone know how to fix it ? Guys ?