Missed logic

src/pages/settings/components/Theming/Themes/ThemeModal.tsx

@@ -586,7 +586,13 @@ export function ThemeModal({
 																				<Text>→</Text>
 																				<Image
 																					w={'40%'}
-																					src={`../../api/backgroundImages/thumbs/${designerTheme[key as keyof Theme] as string}`}
+																					src={
+																						(
+																							designerTheme[key as keyof Theme] as string
+																						).toLocaleLowerCase() === 'none'
+																							? 'https://placehold.co/540x360?text=None'
+																							: `../../api/backgroundImages/thumbs/${designerTheme[key as keyof Theme] as string}`
+																					}
 																				/>
 																			</Group>
 																		)}