Problema ao executar o hot restart na hora de testar manualmente o contato na tabela (minuto 13:25 do vídeo)

gistfile1.txt

main.dart
```
import 'package:flutter/material.dart';
import 'package:minhasegundavia2/database/app_database.dart';
import 'package:minhasegundavia2/models/salva_cpfl.dart';

import 'package:minhasegundavia2/screens/tela_inicial.dart';

void main() {
  runApp(MinhaSegundaViaApp());
  save(SalvaCpfl(3, 'abc', 0123456789, 0987654321)).then((id) {
    findAll().then((contasCpfl) => debugPrint(contasCpfl.toString()));
  });
}

class MinhaSegundaViaApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primaryColor: Colors.pink[600],
        accentColor: Colors.blueAccent[700],
        buttonTheme: ButtonThemeData(
          buttonColor: Colors.blueAccent[700],
          textTheme: ButtonTextTheme.primary,
        ),
      ),
      home: TelaInicial(),
    );
  }
}
```
app_database.dart
```
import 'package:minhasegundavia2/models/salva_cpfl.dart';
import 'package:path/path.dart';
import 'package:sqflite/sqflite.dart';

// função para CRIAR o banco de dados para salvar o que foi
// digitado no cadastro da CPFL
Future<Database> createDatabase() {
  return getDatabasesPath().then((dbPath) {
    final String path = join(dbPath, 'minhaSegundaVia.db');
    return openDatabase(path, onCreate: (db, version) {
      db.execute('CREATE TABLE contas_cpfl('
          'id INTEGER PRIMARY KEY, '
          'name_conta TEXT, '
          'codigo_cpfl INTEGER '
          'cpf INTEGER)');
    }, version: 1);
  });
}

// função para SALVAR no banco de dados o que foi digitado no cadastro da CPFL
// no exemplo do alura, ele fala Contact, mas eu nomeei como SalvaCpfl
Future<int> save(SalvaCpfl contaCpfl) {
  return createDatabase().then((db) {
    final Map<String, dynamic> contaCpflMap = Map();
    contaCpflMap['id'] = contaCpfl.id;
    contaCpflMap['name_conta'] = contaCpfl.nomeContaCpfl;
    contaCpflMap['codigo_cpfl'] = contaCpfl.numeroCodigoCpfl;
    contaCpflMap['cpf'] = contaCpfl.numeroCPF;
    return db.insert('contas_cpfl', contaCpflMap);
  });
}

// função para BUSCAR no banco de dados o que foi salvo no cadastro da CPFL
Future<List<SalvaCpfl>> findAll() {
  return createDatabase().then((db) {
    return db.query('contas_cpfl').then((maps) {
      final List<SalvaCpfl> contasCpfl = List();
      for (Map<String, dynamic> map in maps) {
        final SalvaCpfl contaCpfl = SalvaCpfl(
          map['id'],
          map['name_conta'],
          map['codigo_cpfl'],
          map['cpf'],
        );
        contasCpfl.add(contaCpfl);
      }
      return contasCpfl;
    });
  });
}
```
Erro apresentado
```
Performing hot restart...
Syncing files to device AOSP on IA Emulator...
Restarted application in 1.495ms.
E/SQLiteLog(15603): (1) table contas_cpfl has no column named cpf
E/flutter (15603): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: DatabaseException(table contas_cpfl has no column named cpf (code 1 SQLITE_ERROR): , while compiling: INSERT INTO contas_cpfl (id, name_conta, codigo_cpfl, cpf) VALUES (?, ?, ?, ?)) sql 'INSERT INTO contas_cpfl (id, name_conta, codigo_cpfl, cpf) VALUES (?, ?, ?, ?)' args [3, abc, 123456789, 987654321]}
E/flutter (15603): #0      wrapDatabaseException (package:sqflite/src/exception_impl.dart:12:7)
E/flutter (15603): <asynchronous suspension>
E/flutter (15603): #1      SqfliteDatabaseFactoryImpl.wrapDatabaseException (package:sqflite/src/factory_impl.dart:25:7)
E/flutter (15603): #2      SqfliteDatabaseMixin.safeInvokeMethod (package:sqflite/src/database_mixin.dart:208:15)
E/flutter (15603): #3      SqfliteDatabaseMixin.txnRawInsert.<anonymous closure> (package:sqflite/src/database_mixin.dart:383:14)
E/flutter (15603): #4      SqfliteDatabaseMixin.txnSynchronized.<anonymous closure> (package:sqflite/src/database_mixin.dart:327:22)
E/flutter (15603): #5      BasicLock.synchronized (package:synchronized/src/basic_lock.dart:32:26)
E/flutter (15603): #6      SqfliteDatabaseMixin.txnSynchronized (package:sqflite/src/database_mixin.dart:323:33)
E/flutter (15603): #7      SqfliteDatabaseMixin.txnWriteSynchronized (package:sqflite/src/database_mixin.dart:345:7)
E/flutter (15603): #8      SqfliteDatabaseMixin.txnRawInsert (package:sqflite/src/database_mixin.dart:382:12)
E/flutter (15603): #9      SqfliteDatabaseExecutorMixin.rawInsert (package:sqflite/src/database_mixin.dart:50:15)
E/flutter (15603): #10     SqfliteDatabaseExecutorMixin.insert (package:sqflite/src/database_mixin.dart:60:12)
E/flutter (15603): #11     save.<anonymous closure> (package:minhasegundavia2/database/app_database.dart:29:15)
E/flutter (15603): #12     _rootRunUnary (dart:async/zone.dart:1134:38)
E/flutter (15603): #13     _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (15603): #14     _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
E/flutter (15603): #15     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
E/flutter (15603): #16     Future._propagateToListeners (dart:async/future_impl.dart:709:32)
E/flutter (15603): #17     Future._completeWithValue (dart:async/future_impl.dart:524:5)
E/flutter (15603): #18     _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:32:15)
E/flutter (15603): #19     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:290:13)
E/flutter (15603): #20     BasicLock.synchronized (package:synchronized/src/basic_lock.dart)
E/flutter (15603): <asynchronous suspension>
E/flutter (15603): #21     ReentrantLock.synchronized (package:synchronized/src/reentrant_lock.dart:30:17)
E/flutter (15603): #22     SqfliteDatabaseFactoryMixin.openDatabase (package:sqflite/src/factory_mixin.dart:71:17)
E/flutter (15603): #23     openDatabase (package:sqflite/sqflite.dart:152:26)
E/flutter (15603): #24     createDatabase.<anonymous closure> (package:minhasegundavia2/database/app_database.dart:10:12)
E/flutter (15603): #25     _rootRunUnary (dart:async/zone.dart:1134:38)
E/flutter (15603): #26     _CustomZone.runUnary (dart:async/zone.dart:1031:19)
E/flutter (15603): #27     _FutureListener.handleValue (dart:async/future_impl.dart:139:18)
E/flutter (15603): #28     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:680:45)
E/flutter (15603): #29     Future._propagateToListeners (dart:async/future_impl.dart:709:32)
E/flutter (15603): #30     Future._completeWithValue (dart:async/future_impl.dart:524:5)
E/flutter (15603): #31     _AsyncAwaitCompleter.complete (dart:async-patch/async_patch.dart:32:15)
E/flutter (15603): #32     _completeOnAsyncReturn (dart:async-patch/async_patch.dart:290:13)
E/flutter (15603): #33     SqfliteDatabaseFactoryMixin.getDatabasesPath (package:sqflite/src/factory_mixin.dart)
E/flutter (15603): <asynchronous suspension>
E/flutter (15603): #34     getDatabasesPath (package:sqflite/sqflite.dart:168:54)
E/flutter (15603): #35     createDatabase (package:minhasegundavia2/database/app_database.dart:8:10)
E/flutter (15603): #36     save (package:minhasegundavia2/database/app_database.dart:23:10)
E/flutter (15603): #37     main (package:minhasegundavia2/main.dart:9:3)
E/flutter (15603): #38     _runMainZoned.<anonymous closure>.<anonymous closure> (dart:ui/hooks.dart:239:25)
E/flutter (15603): #39     _rootRun (dart:async/zone.dart:1126:13)
E/flutter (15603): #40     _CustomZone.run (dart:async/zone.dart:1023:19)
E/flutter (15603): #41     _runZoned (dart:async/zone.dart:1518:10)
E/flutter (15603): #42     runZoned (dart:async/zone.dart:1502:12)
E/flutter (15603): #43     _runMainZoned.<anonymous closure> (dart:ui/hooks.dart:231:5)
E/flutter (15603): #44     _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:307:19)
E/flutter (15603): #45     _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.d
```