Fixed css error

source/ubl-settings-manager.c

@@ -1956,7 +1956,7 @@ int main(int argc, char *argv[]){
     GtkIconTheme *icthm=gtk_icon_theme_get_default();
     gtk_image_set_from_pixbuf(GTK_IMAGE(banner),gtk_icon_info_load_icon(gtk_icon_theme_lookup_icon_for_scale(icthm, AppIconPath,yon_get_icon_size(*main_config.currentThemeIconSize),1,GTK_ICON_LOOKUP_FORCE_SVG),NULL));
     GtkCssProvider *css=gtk_css_provider_new();
-    gtk_css_provider_load_from_resource(css,CssPath,NULL);
+    gtk_css_provider_load_from_resource(css,CssPath);
     gtk_style_context_add_provider_for_screen(gdk_screen_get_default(),
                                GTK_STYLE_PROVIDER(css),
                                -1);