The named parameter 'child' isn't defined. in Center() constructor

Question

I ran flutter upgrade today, and now I am getting an error that says- [dart] The named parameter \'child\' isn\'t defined. The project is newly created and the default code

Answer 1

I just had the same issue. It looks like I changed a flutter lib file by mistake.

To fix this, without reinstalling Flutter SDK:

• go to your Flutter SDK installation path
• open terminal and type: git status
• it will show the modified files in red (ex: modified: packages/flutter/lib/src/widgets/basic.dart
• revert modifications file using: git checkout FILE_PATH (ex: git checkout packages/flutter/lib/src/widgets/basic.dart)