Another exception was thrown: instance of ‘diagnosticsproperty‘

Query Error:

Another exception was thrown: instance of ‘DiagnosticsProperty<void>’

Explanation:

This error message indicates that an exception of type ‘DiagnosticsProperty<void>’ was thrown during the execution of your code.
The ‘DiagnosticsProperty’ class is typically used for debugging purposes in Flutter to print diagnostic information about the application’s state.
However, in this case, an instance of ‘DiagnosticsProperty<void>’ means that the exception does not provide any meaningful details or a specific error message.

Examples:

1. In the following code snippet, an exception of type ‘DiagnosticsProperty<void>’ is thrown due to a missing argument in a function call:

            void main() {
                final result = calculate();
                print(result);
            }
            
            int calculate({int x, int y}) {
                return x + y;
            }
        

In this example, the ‘calculate’ function requires two integer arguments ‘x’ and ‘y’, but they are not provided during the function call.
As a result, the exception ‘DiagnosticsProperty<void>’ is thrown without any specific error message.

2. Another scenario where this exception can occur is when a Flutter widget encounters an error while trying to build its user interface.
For example, if a widget’s ‘build’ method throws an unhandled exception of type ‘DiagnosticsProperty<void>’, it can lead to this error message.

            class MyApp extends StatelessWidget {
                @override
                Widget build(BuildContext context) {
                    return Container(
                        color: Colors.red,
                        child: Center(
                            child: Text('Hello', style: TextStyle(fontSize: 24)),
                        ),
                    );
                }
            }
            
            void main() {
                runApp(MyApp());
            }
        

In this case, the ‘Text’ widget is missing the required ‘data’ property, which causes the ‘DiagnosticsProperty<void>’ exception to be thrown.