Program not starting on MATE desktop

[olddesklamp]

OS: EndeavourOS
Install method: AUR
App version: 2.7-2

I've shared the output when ran through a terminal. It says I'm missing a settings scheme, any idea how I can get this or find a workaround?

[josh@Mercury ~]$ dynamic-wallpaper-editor

(dynamic-wallpaper-editor:10506): Gtk-WARNING **: 13:29:24.195: Theme parsing error: gtk.css:2909:9: 'width' is not a valid property name

(dynamic-wallpaper-editor:10506): Gtk-WARNING **: 13:29:24.195: Theme parsing error: gtk.css:2916:9: 'width' is not a valid property name

(dynamic-wallpaper-editor:10506): Gtk-WARNING **: 13:29:24.197: Theme parsing error: gtk.css:4880:28: The style property GtkRange:slider-width is deprecated and shouldn't be used anymore. It will be removed in a future version

(dynamic-wallpaper-editor:10506): Gtk-WARNING **: 13:29:24.197: Theme parsing error: gtk.css:4882:29: The style property GtkRange:trough-border is deprecated and shouldn't be used anymore. It will be removed in a future version

(dynamic-wallpaper-editor:10506): Gtk-WARNING **: 13:29:24.199: Theme parsing error: gtk.css:7062:27: The style property GtkPaned:handle-size is deprecated and shouldn't be used anymore. It will be removed in a future version

(com.github.maoschanz.DynamicWallpaperEditor:10506): GLib-GIO-ERROR **: 13:29:24.254: Settings schema 'org.mate.desktop.background' is not installed
Trace/breakpoint trap (core dumped)