Errors in Array

errors_alerts.js

showAlertError(error) {
    console.log('showAlert');
    console.log(error);
    $('div.error').text(error);
    $('div.error').removeAttr('hidden');
  }

  errorSend(err) {
    var user = JSON.parse(window.localStorage.getItem('user'));
    //var errJson = "";
    console.log('err');
    console.log(err);
    var messages = new Array();
    if (err._body !== "") {
      console.log(err._body);
      var errJson = JSON.parse(err._body);
      if (errJson.errors) {
        var erros = Object.keys(errJson.errors).map((e) => messages.push(errJson.errors[e]));
      }
      if (errJson.error) {
        console.log('else if');
        console.log(errJson.error);
        var erros = Object.keys(errJson.error).map((e) => messages.push(errJson.error[e]));
      }
    }
    else {
      messages.push(err.statusText);
    }
    console.log('errJson');
    console.log(errJson);

    var error = "";
    switch (err.status) {
      case 400:
        console.log(messages);
        error = messages[0];
        break;
      case 401:
        console.log('401');
        console.log(user);
        if (user !== null && user !== '') {
          console.log('if');
          this.authenticate(user).subscribe(
            (data) => { console.log(data); 
              
              this.storeUserHeaders(data.accesstoken, data.expiry, data.tokentype, data.uid, data.client);
/*               var component = this.navController.getActive().instance;
              component.ionViewDidLoad(); */
              window.location.reload();
            },
            (err) => { }
          );
        }
        else {
          error = messages[0];
        }
        break;
      case 405:
        error = err.message;
        break;
      case 422:
        error = errJson.message;
        break;
      case 500:
        error = errJson.message;
        break;
    }
    this.showAlertError(error);
  }

  errorToast(error) {
    let toast = this.toastCtrl.create({
      message: error,
      position: 'middle',
      showCloseButton: true,
      closeButtonText: 'Ok',
      cssClass: 'error'
    });
    toast.present();
  }

  successToast(data) {
    console.log(data);
    let toast = this.toastCtrl.create({
      message: data.success,
      position: 'middle',
      showCloseButton: true,
      closeButtonText: 'Ok',
      cssClass: 'success'
    });
    // toast.onDidDismiss(() => {
    //   this.viewCtrl.dismiss();
    //   this.login();
    // });
    toast.present();

  }