update: change loading indicator to icon

app/lib/pages/default_page.dart

@@ -64,7 +64,11 @@ class _DefaultPageState extends State<DefaultPage> {
           builder: (BuildContext context, AsyncSnapshot<List<dynamic>> snapshot) {
             // Display loading screen until data is fetched
             if (snapshot.connectionState == ConnectionState.waiting) {
-              return const Center(child: CircularProgressIndicator());
+              return const Center(child: Icon(
+                  Icons.severe_cold,
+                  color: Colors.blue,
+                  size: 100,
+              ));
             } else if (snapshot.hasError) {
               return Center(child: Text('Error: ${snapshot.error}'));
             } else {
@@ -92,3 +96,4 @@ class _DefaultPageState extends State<DefaultPage> {
     );
   }
 }
+