Hibernate gives insert but does not insert data into table

I have a visitor record in which I fill in the data (title and date), and hibernate executes when requesting "save" on the form.

Here is the log when I ask to save in bank (MySql).

12:37:27.752 DEBUG org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl: Adding composing constraint: ConstraintDescriptorImpl{annotation=javax.validation.constraints.NotNull, payloads=[], hasComposingConstraints=true, isReportAsSingleInvalidConstraint=false, elementType=FIELD, definedOn=DEFINED_LOCALLY, groups=[interface javax.validation.groups.Default], attributes={message={javax.validation.constraints.NotNull.message}, groups=[Ljava.lang.Class;@5c6bf3c2, payload=[Ljava.lang.Class;@174cdbab}, constraintType=GENERIC}.
12:37:27.862 DEBUG org.hibernate.engine.transaction.internal.TransactionImpl: begin
12:37:27.919 DEBUG org.hibernate.engine.spi.ActionQueue: Executing identity-insert immediately
12:37:27.937 DEBUG org.hibernate.SQL: insert into visita (data, titulo) values (?, ?)
12:37:27.984 DEBUG org.hibernate.id.IdentifierGeneratorHelper: Natively generated identity: 11
12:37:27.984 DEBUG org.hibernate.resource.jdbc.internal.ResourceRegistryStandardImpl: HHH000387: ResultSet's statement was not registered
12:37:27.991 DEBUG org.hibernate.engine.transaction.internal.TransactionImpl: committing
12:37:27.993 DEBUG org.hibernate.event.internal.AbstractFlushingEventListener: Processing flush-time cascades
12:37:27.995 DEBUG org.hibernate.event.internal.AbstractFlushingEventListener: Dirty checking collections
12:37:27.999 DEBUG org.hibernate.event.internal.AbstractFlushingEventListener: Flushed: 0 insertions, 0 updates, 0 deletions to 1 objects
12:37:27.999 DEBUG org.hibernate.event.internal.AbstractFlushingEventListener: Flushed: 0 (re)creations, 0 updates, 0 removals to 0 collections
12:37:28.002 DEBUG org.hibernate.internal.util.EntityPrinter: Listing entities:
12:37:28.002 DEBUG org.hibernate.internal.util.EntityPrinter: model.Visita{data=2019-03-12, titulo=aaa, id=11}

From what I understand the data is not passing to the insert command, but it appears in the "Model" at the end of the execution. But I do not know how to solve this ... I already researched for answers and I did not find anything that solved.

EDIT:

The error is triggered when Spring executes this Service:

@Service
public class CadastroVisitaService {

    @Autowired
    private Visitas visitas;

    @Transactional
    public void salvar(Visita visita) {
        try {
            visitas.save(visita);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

    }

}

Important codes for understanding:

Visitor Repository

@Repository
public interface Visitas extends JpaRepository<Visita,Long> {

}

Visitor Controller

@Controller
public class VisitasController {

    @Autowired
    private CadastroVisitaService cadastroVisitaService;

    @RequestMapping("/visitas/novo")
    public ModelAndView novo(Visita visita) {
        ModelAndView mv = new ModelAndView("visita/CadastroVisita");
        return mv;
    }

    @RequestMapping(value = "/visitas/novo", method = RequestMethod.POST)
    public ModelAndView cadastrar(@Valid Visita visita, BindingResult result, Model model, RedirectAttributes attributes) {
        if (result.hasErrors()) {
            return novo(visita);
        }

        try {
            cadastroVisitaService.salvar(visita);
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        attributes.addFlashAttribute("mensagem", "Visita salva com sucesso!");
        return new ModelAndView("redirect:/visitas/novo");
    }

}

Entity Visit

@Entity
@Table(name = "visita")
public class Visita {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @NotBlank(message = "Titulo é obrigatório")
    private String titulo;

    @NotNull(message = "Data é obrigatória")
    @Data
    private LocalDate data;

    public String getTitulo() {
        return titulo;
    }

    public void setTitulo(String titulo) {
        this.titulo = titulo;
    }

    public LocalDate getData() {
        return data;
    }

    public void setData(LocalDate data) {
        this.data = data;
    }


}

Context.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xml>
<Context>
    <Resource name="jdbc/visitas" auth="Container"
              factory="org.apache.naming.factory.BeanFactory"
              type="com.mchange.v2.c3p0.ComboPooledDataSource"
              driverClass="com.mysql.jdbc.Driver"
              jdbcUrl="jdbc:mysql://localhost/visitas?useSSL=false"
              user="root"
              password="root"
              initialPoolSize="5"
              minPoolSize="5"
              maxPoolSize="5"
    />
</Context>

I'm using Thymeleaf in the frontend, with pure html.