Quando executo o flutter run, ocorre o erro abaixo:
Using hardware rendering with device AOSP on IA Emulator. If you notice graphics artifacts, consider enabling software rendering with "--enable-software-rendering".
Launching lib\main.dart on AOSP on IA Emulator in debug mode...
lib/main.dart:31:19: Error: The parameter 'key' can't have a value of 'null' because of its type 'Key', but the implicit default value is 'null'.
- 'Key' is from 'package:flutter/src/foundation/key.dart' ('/C:/Tools/flutter/packages/flutter/lib/src/foundation/key.dart').
Try adding either an explicit non-'null' default value or the 'required' modifier.
MyHomePage({Key key, this.title}) : super(key: key);
^^^
lib/main.dart:31:29: Error: The parameter 'title' can't have a value of 'null' because of its type 'String', but the implicit default value is 'null'.
Try adding either an explicit non-'null' default value or the 'required' modifier.
MyHomePage({Key key, this.title}) : super(key: key);
^^^^^
FAILURE: Build failed with an exception.
* Where:
Script 'C:\Tools\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 991
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command 'C:\Tools\flutter\bin\flutter.bat'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 14s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 15,3s
Exception: Gradle task assembleDebug failed with exit code 1
