Add Teardown code

src/components/3d/PublicPreview.svelte

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