glassfish no start GLib-GIO-ERROR **: Settings schema 'org.gnome.system.proxy' is not installed

Try to install gsettings-desktop-schemas.

Or alternatively, try this

sudo /usr/bin/glib-compile-schemas /usr/share/glib-2.0/schemas/

With archlinux, this solution worked to address this bug

(gedit:22225): GLib-GIO-ERROR **: 09:49:08.734: Settings schema 'org.gnome.gedit.plugins.spell' is not installed

I found the solution there:

• Error: GLib-GIO-ERROR: Settings schema 'org.blueman.general' is not installed · Issue #274 · blueman-project/blueman
• mate-screenshot GLib-GIO-ERROR - schema not installed / Applications & Desktop Environments / Arch Linux Forums