Add Teardown code

src/components/3d/PublicPreview.svelte

@@ -88,11 +88,13 @@
     });
 
     onDestroy(() => {
+        if (loaded) {
             loaded = false;
 
             renderer.dispose();
             scene.clear();
             light.dispose();
+        }
     })
 
     function handleResize() {