error when I add a new data to my box

**Question**
I have an error when I try to add a new data to my boxpatient
this new data is added to another list called ListNote which is in my list

**ERR Hive**
```
[VERBOSE-2:dart_vm_initializer.cc(41)] Unhandled Exception: HiveError: Cannot write, unknown type: ListNote. Did you forget to register an adapter?
#0 BinaryWriterImpl.write
package:hive/…/binary/binary_writer_impl.dart:338
#1 BinaryWriterImpl.writeList
package:hive/…/binary/binary_writer_impl.dart:223
#2 BinaryWriterImpl._writeList
package:hive/…/binary/binary_writer_impl.dart:390
#3 BinaryWriterImpl.write
package:hive/…/binary/binary_writer_impl.dart:329
#4 PatientsAdapter.write
package:medicalnote/models/listpatient.g.dart:50
#5 BinaryWriterImpl.write
package:hive/…/binary/binary_writer_impl.dart:344
#6 BinaryWriterImpl.writeFrame
package:hive/…/binary/binary_writer_impl.dart:282
#7 StorageBackendVm.writeFrames.
package:hive/…/vm/storage_backend_vm.dart:128
#8 ReadWriteSync.syncWrite.
package:hive/…/vm/read_write_sync.dart:26

```

**Here is my model**
```dart
import 'package:hive_flutter/hive_flutter.dart';

part 'listpatient.g.dart';

@HiveType(typeId: 0)
class Patients {
@HiveField(0)
final String? name;

@HiveField(1)
final String? firstname;

@HiveField(3)
final String? dateofbirth;

@HiveField(4)
final String? email;

@HiveField(5)
final String? numero;

@HiveField(6)
final DateTime? date;

@HiveField(7)
final int? id;

@HiveField(8)
final List? listOfNotes;

const Patients({
this.name,
this.firstname,
this.dateofbirth,
this.email,
this.numero,
this.date,
this.id,
this.listOfNotes,
});
}

@HiveType(typeId: 0)
class ListNote {
@HiveField(1)
final String? title;

@HiveField(2)
final String? note;

@HiveField(3)
final String? conclusion;

ListNote({
this.title,
this.note,
this.conclusion,
});
}
```

**My model generate**

```dart
// GENERATED CODE - DO NOT MODIFY BY HAND

part of 'listpatient.dart';

// **************************************************************************
// TypeAdapterGenerator
// **************************************************************************

class PatientsAdapter extends TypeAdapter {
@override
final int typeId = 0;

@override
Patients read(BinaryReader reader) {
final numOfFields = reader.readByte();
final fields = {
for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
};
return Patients(
name: fields[0] as String?,
firstname: fields[1] as String?,
dateofbirth: fields[3] as String?,
email: fields[4] as String?,
numero: fields[5] as String?,
date: fields[6] as DateTime?,
id: fields[7] as int?,
listOfNotes: (fields[8] as List?)?.cast(),
);
}

@override
void write(BinaryWriter writer, Patients obj) {
writer
..writeByte(8)
..writeByte(0)
..write(obj.name)
..writeByte(1)
..write(obj.firstname)
..writeByte(3)
..write(obj.dateofbirth)
..writeByte(4)
..write(obj.email)
..writeByte(5)
..write(obj.numero)
..writeByte(6)
..write(obj.date)
..writeByte(7)
..write(obj.id)
..writeByte(8)
..write(obj.listOfNotes);
}

@override
int get hashCode => typeId.hashCode;

@override
bool operator ==(Object other) =>
identical(this, other) ||
other is PatientsAdapter &&
runtimeType == other.runtimeType &&
typeId == other.typeId;
}

class ListNoteAdapter extends TypeAdapter {
@override
final int typeId = 0;

@override
ListNote read(BinaryReader reader) {
final numOfFields = reader.readByte();
final fields = {
for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
};
return ListNote(
title: fields[1] as String?,
note: fields[2] as String?,
conclusion: fields[3] as String?,
);
}

@override
void write(BinaryWriter writer, ListNote obj) {
writer
..writeByte(3)
..writeByte(1)
..write(obj.title)
..writeByte(2)
..write(obj.note)
..writeByte(3)
..write(obj.conclusion);
}

@override
int get hashCode => typeId.hashCode;

@override
bool operator ==(Object other) =>
identical(this, other) ||
other is ListNoteAdapter &&
runtimeType == other.runtimeType &&
typeId == other.typeId;
}
```

**Here is how I add a new note to my box**
```dart
void initState() {
super.initState();
boxPatient = Hive.box('Patient');
}

void _addNote(String newtitle, String newnote, String newconclusion) {
final newNOTE = Patients(
listOfNotes: [
ListNote(title: newtitle, note: newnote, conclusion: newconclusion)
],
);
boxPatient.add(newNOTE);
Navigator.of(context).pop();
}
```

**Version**
- Platform: iOS, Android
- Flutter version: 3.3.7 lastest version
- hive: ^2.2.3
- hive_flutter: ^1.1.0
- hive_generator: ^2.0.0
- build_runner: ^2.3.2

**Thanks a lot for your help :)**

Review the model in listpatient.dart and the generated adapters in listpatient.g.dart, then inspect the Hive setup before writing Patients with a ListNote. Done means adding the note succeeds without the unknown-type error on iOS and Android.

Written by the indexing model from the issue text.