No such schema “org.mate.session.required-components”

[ricardokl]

I installed manjaro-gnome in a virtual machine. Then I updated the system, (sudo pacman -Syu) followed by installing icewm (sudo pacman -S icewm).

Trying to run icewm-set-gnomewm leads to the error in the title:
"No such schema “org.mate.session.required-components”"

If I log out and switch to the icewm sessions, it works nicely.