diff --git a/examples/app-architecture/todo_data_service/lib/main_app_viewmodel.dart b/examples/app-architecture/todo_data_service/lib/main_app_viewmodel.dart
index 215584c2a6..70a2cce200 100644
--- a/examples/app-architecture/todo_data_service/lib/main_app_viewmodel.dart
+++ b/examples/app-architecture/todo_data_service/lib/main_app_viewmodel.dart
@@ -24,16 +24,11 @@ class MainAppViewModel extends ChangeNotifier {
   bool get isDarkMode => _isDarkMode;
 
   Future<void> _load() async {
-    try {
-      final result = await _themeRepository.isDarkMode();
-      if (result is Ok<bool>) {
-        _isDarkMode = result.value;
-      }
-    } on Exception catch (_) {
-      // handle error
-    } finally {
-      notifyListeners();
+    final result = await _themeRepository.isDarkMode();
+    if (result is Ok<bool>) {
+      _isDarkMode = result.value;
     }
+    notifyListeners();
   }
 
   @override
diff --git a/examples/app-architecture/todo_data_service/lib/ui/theme_config/viewmodel/theme_switch_viewmodel.dart b/examples/app-architecture/todo_data_service/lib/ui/theme_config/viewmodel/theme_switch_viewmodel.dart
index d1c5518d6f..072d08919a 100644
--- a/examples/app-architecture/todo_data_service/lib/ui/theme_config/viewmodel/theme_switch_viewmodel.dart
+++ b/examples/app-architecture/todo_data_service/lib/ui/theme_config/viewmodel/theme_switch_viewmodel.dart
@@ -26,29 +26,20 @@ class ThemeSwitchViewModel extends ChangeNotifier {
 
   /// Load the current theme setting from the repository
   Future<Result<void>> _load() async {
-    try {
-      final result = await _themeRepository.isDarkMode();
-      if (result is Ok<bool>) {
-        _isDarkMode = result.value;
-      }
-      return result;
-    } on Exception catch (e) {
-      return Result.error(e);
-    } finally {
-      notifyListeners();
+    final result = await _themeRepository.isDarkMode();
+    if (result is Ok<bool>) {
+      _isDarkMode = result.value;
     }
+    notifyListeners();
+    return result;
   }
 
   /// Toggle the theme setting
   Future<Result<void>> _toggle() async {
-    try {
-      _isDarkMode = !_isDarkMode;
-      return await _themeRepository.setDarkMode(_isDarkMode);
-    } on Exception catch (e) {
-      return Result.error(e);
-    } finally {
-      notifyListeners();
-    }
+    _isDarkMode = !_isDarkMode;
+    final result = await _themeRepository.setDarkMode(_isDarkMode);
+    notifyListeners();
+    return result;
   }
 }
 
diff --git a/src/content/app-architecture/design-patterns/key-value-data.md b/src/content/app-architecture/design-patterns/key-value-data.md
index 525d025463..dd673f9e7f 100644
--- a/src/content/app-architecture/design-patterns/key-value-data.md
+++ b/src/content/app-architecture/design-patterns/key-value-data.md
@@ -148,29 +148,20 @@ class ThemeSwitchViewModel extends ChangeNotifier {
 
   /// Load the current theme setting from the repository
   Future<Result<void>> _load() async {
-    try {
-      final result = await _themeRepository.isDarkMode();
-      if (result is Ok<bool>) {
-        _isDarkMode = result.value;
-      }
-      return result;
-    } on Exception catch (e) {
-      return Result.error(e);
-    } finally {
-      notifyListeners();
+    final result = await _themeRepository.isDarkMode();
+    if (result is Ok<bool>) {
+      _isDarkMode = result.value;
     }
+    notifyListeners();
+    return result;
   }
 
   /// Toggle the theme setting
   Future<Result<void>> _toggle() async {
-    try {
-      _isDarkMode = !_isDarkMode;
-      return await _themeRepository.setDarkMode(_isDarkMode);
-    } on Exception catch (e) {
-      return Result.error(e);
-    } finally {
-      notifyListeners();
-    }
+    _isDarkMode = !_isDarkMode;
+    final result = await _themeRepository.setDarkMode(_isDarkMode);
+    notifyListeners();
+    return result;
   }
 }
 ```
@@ -317,16 +308,11 @@ class MainAppViewModel extends ChangeNotifier {
   bool get isDarkMode => _isDarkMode;
 
   Future<void> _load() async {
-    try {
-      final result = await _themeRepository.isDarkMode();
-      if (result is Ok<bool>) {
-        _isDarkMode = result.value;
-      }
-    } on Exception catch (_) {
-      // handle error
-    } finally {
-      notifyListeners();
+    final result = await _themeRepository.isDarkMode();
+    if (result is Ok<bool>) {
+      _isDarkMode = result.value;
     }
+    notifyListeners();
   }
 
   @override