Missing concrete implementations of 'getter mixin _$ClassName on Object.id', 'getter mixin _$Clas...

freezed: ^3.1.0

Missing concrete implementations of 'getter mixin _$ClassName on Object.id', 'getter mixin _$ClassName on Object.name', and 1 more.
Try implementing the missing methods, or make the class abstract.

 import 'package:freezed_annotation/freezed_annotation.dart';
 
 part 'class_name.freezed.dart';
 part 'class_name.g.dart';
 
 @freezed
 class ClassName with _$CraftEssence {
   const ClassName._();
 
   factory ClassName({
     required String id,
     required String name,
   }) = ClassName;
 
   factory ClassName.fromJson(Map<String, dynamic> json) =>
       _$ClassNameFromJson(json);
 }

@freezed
sealed class ClassName with _$ClassName {

@freezed
abstract class ClassName with _$ClassName {