Fix Expand error

lib/ui/widgets/loading_box.dart

 import 'package:flutter/material.dart';
 
+class LoadingWidget extends StatelessWidget {
+  const LoadingWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return const SizedBox(
+        width: 100.0,
+        height: 100.0,
+        child: Center(
+          child: CircularProgressIndicator(),
+        ));
+  }
+}
+
 class LoadingBox extends StatelessWidget {
-  const LoadingBox({super.key});
+  const LoadingBox({super.key, required this.simple});
+
+  final bool simple;
 
   @override
   Widget build(BuildContext context) {
-    return const Expanded(
-      child: SizedBox(
-          width: 100.0,
-          height: 100.0,
-          child: Center(
-            child: CircularProgressIndicator(),
-          )),
-    );
+    return simple
+        ? const LoadingWidget()
+        : const Expanded(
+            child: LoadingWidget(),
+          );
   }
 }