some changes in tenders

lib/view_models/tenders_view_model.dart

@@ -25,6 +25,8 @@ class TendersViewModel with ChangeNotifier {
   bool _isLoading = false;
   bool _isLoadingMore = false;
   String? _errorMessage;
+  String? _feedbackErrorMessage;
+  String? _tenderApprovalErrorMessage;
   TendersResponse? _tendersResponse;
   FeedbackData? _feedbackData;
   TenderApprovalsData? _tenderApprovalData;
@@ -33,6 +35,8 @@ class TendersViewModel with ChangeNotifier {
   bool get isLoading => _isLoading;
   bool get isLoadingMore => _isLoadingMore;
   String? get errorMessage => _errorMessage;
+  String? get feedbackErrorMessage => _feedbackErrorMessage;
+  String? get tenderApprovalErrorMessage => _tenderApprovalErrorMessage;
   TendersResponse? get tendersResponse => _tendersResponse;
   FeedbackData? get feedbackData => _feedbackData;
   TenderApprovalsData? get tenderApprovalData => _tenderApprovalData;
@@ -246,7 +250,7 @@ class TendersViewModel with ChangeNotifier {
     required String tenderId,
     required String feedbackType,
   }) async {
-    _errorMessage = null;
+    _feedbackErrorMessage = null;
     notifyListeners();
 
     final result = await _tendersRepository.feedback(
@@ -268,11 +272,11 @@ class TendersViewModel with ChangeNotifier {
         }
         break;
       case Error<FeedbackResponse>():
-        _errorMessage = result.error.toString();
+        _feedbackErrorMessage = result.error.toString();
         break;
     }
     notifyListeners();
-    _errorMessage = null;
+    _feedbackErrorMessage = null;
     notifyListeners();
   }
 
@@ -281,7 +285,7 @@ class TendersViewModel with ChangeNotifier {
     required String submissionMode,
     required String status,
   }) async {
-    _errorMessage = null;
+    _tenderApprovalErrorMessage = null;
     notifyListeners();
     final result = await _tendersRepository.toggleApprovals(
       tenderId: tenderId,
@@ -314,11 +318,11 @@ class TendersViewModel with ChangeNotifier {
         }
         break;
       case Error<TenderApprovalsToggleResponse>():
-        _errorMessage = result.error.toString();
+        _tenderApprovalErrorMessage = result.error.toString();
         break;
     }
     notifyListeners();
-    _errorMessage = null;
+    _tenderApprovalErrorMessage = null;
     notifyListeners();
   }
 }