Symfony2 form errors

array(4) {
  ["email"]=>
  array(1) {
    [0]=>
    string(22) "The email is required."
  }
  ["password"]=>
  array(1) {
    ["first"]=>
    array(1) {
      [0]=>
      string(25) "The password is required."
    }
  }
  ["birthday"]=>
  array(1) {
    [0]=>
    string(25) "The birthday is required."
  }
  ["address"]=>
  array(1) {
    ["postalCode"]=>
    array(1) {
      [0]=>
      string(21) "The city is required."
    }
  }
}