Quotation

frontend/pshared/lib/provider/resource.dart

@@ -5,11 +5,14 @@ class Resource<T> {
 
   Resource({this.data, this.isLoading = false, this.error});
 
-  Resource<T> copyWith({T? data, bool? isLoading, Exception? error}) {
+  static const _unset = Object();
+
+  Resource<T> copyWith({T? data, bool? isLoading, Object? error = _unset}) {
     return Resource<T>(
       data: data ?? this.data,
       isLoading: isLoading ?? this.isLoading,
-      error: error ?? this.error,
+      // Distinguish "not provided" from an explicit null to allow clearing error.
+      error: error == _unset ? this.error : error as Exception?,
     );
   }
 }