我已经在我的 ubuntu 18 中安装了新图标，现在我无法打开许多应用程序，包括 gnome tweaks，这是错误：
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.347: Theme parsing error: gtk.css:7852:22: Expected '(' after 'url'
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.347: Theme parsing error: gtk.css:7852:147: Invalid character in string. Must be escaped.
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.352: Theme parsing error: gtk.css:11634:3: '/*' in comment block
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.352: Theme parsing error: gtk.css:11740:2: '/*' in comment block
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.352: Theme parsing error: gtk.css:11785:26: 'text-shadow' is not a valid color name
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.352: Theme parsing error: gtk.css:12045:14: 'ffffff' is not a valid color name
(gnome-tweaks:8688): Gtk-WARNING **: 21:34:24.566: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /home/cap10n3mo/.icons/Mac-moD-master/mimes/48/image.svg: Unrecognized image file format (gdk-pixbuf-error-quark, 3)
Aborted (core dumped)