🐛 Fix compability issue on web platform

lib/models/relationship.g.dart

@@ -0,0 +1,45 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'relationship.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_SnRelationship _$SnRelationshipFromJson(Map<String, dynamic> json) =>
+    _SnRelationship(
+      createdAt:
+          json['created_at'] == null
+              ? null
+              : DateTime.parse(json['created_at'] as String),
+      updatedAt:
+          json['updated_at'] == null
+              ? null
+              : DateTime.parse(json['updated_at'] as String),
+      deletedAt:
+          json['deleted_at'] == null
+              ? null
+              : DateTime.parse(json['deleted_at'] as String),
+      accountId: json['account_id'] as String,
+      account: SnAccount.fromJson(json['account'] as Map<String, dynamic>),
+      relatedId: json['related_id'] as String,
+      related: SnAccount.fromJson(json['related'] as Map<String, dynamic>),
+      expiredAt:
+          json['expired_at'] == null
+              ? null
+              : DateTime.parse(json['expired_at'] as String),
+      status: (json['status'] as num).toInt(),
+    );
+
+Map<String, dynamic> _$SnRelationshipToJson(_SnRelationship instance) =>
+    <String, dynamic>{
+      'created_at': instance.createdAt?.toIso8601String(),
+      'updated_at': instance.updatedAt?.toIso8601String(),
+      'deleted_at': instance.deletedAt?.toIso8601String(),
+      'account_id': instance.accountId,
+      'account': instance.account.toJson(),
+      'related_id': instance.relatedId,
+      'related': instance.related.toJson(),
+      'expired_at': instance.expiredAt?.toIso8601String(),
+      'status': instance.status,
+    };