Try correcting the name to an existing named parameter's name, or defining a named parameter with the name 'hint'. See https://dart.dev/diagnostics/undefined_named_parameter to learn more about this problem.

Try correcting the name to an existing named parameter's name, or defining a named parameter with the name 'hint'. See https://dart.dev/diagnostics/undefined_named_parameter to learn more about this problem.

Try specifying a class or mixin, or remove the name from the list. See https://dart.dev/diagnostics/implements_non_class to learn more about this problem.

Dart Analyzer detected problems, see the logs for more information.

Try updating this class to match the superclass, or removing the override annotation. See https://dart.dev/diagnostics/override_on_non_overriding_member to learn more about this problem.