KDE text editor component missing

When i try to start a text editor "Kwrite" or "Kate", the system says " A KDE text-editor component could not be found. Please check your KDE installation."
If I try to start the application from a console, I have the same result and the following:
"Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading configurations from ~/.fonts.conf is deprecated."
What does it mean? Did I choose wrong fonts for KDE? Why did this thing allowed me to do so?
If I try to start the application from a console, I have the same result and the following:
"Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 9: reading configurations from ~/.fonts.conf is deprecated."
What does it mean? Did I choose wrong fonts for KDE? Why did this thing allowed me to do so?