The agenda is to change the wallpaper automatically on specific timr, hence i tried creating a routine.  I put the trigger time 8.30am daily...then when i tried setting the action to change wallpaper, it was grayed out & giving me this error. However if im choosing different triggers, its working.  So can you all please help me fix this, so i can change wallpapers multiple times in a day at given time trigger

Thanks in advance