Laravel: ValidationException::withMessages not sending all errors - laravel

Question

I'm trying to make some validations in Laravel. I have a resource with nested resources, so I need to validate many things at once. I have a Level, which is composed of many Questions. So In order to validate them, I first validate the Level, and then each question one by one.
I use the following method:
public function ValidateDataAgainstModel($data) {
$book = Level::ValidationBook(); // Or Answer::ValidationBook()
$validator = Validator::make($data,
$book['rules'],
$book['messages']);
if ($validator->fails()) {
return $validator->errors();
}
return null;
}
That method is used in Level and Question, so it is the same.
Then I group all errors in a single array like this:
$errors = [];
$errors['level'] = $levelError;
$errors['questions'] = $questionsErrors; //$questionErrors is an array of each question errors
Then to check that my array is correct I make a \Log::info($errors) and get the following result:
[2018-12-12 23:47:12] local.INFO: array (
'level' =>
Illuminate\Support\MessageBag::__set_state(array(
'messages' =>
array (
'name' =>
array (
0 => 'Se requiere el nombre del nivel',
),
),
'format' => ':message',
)),
'questions' =>
array (
0 =>
Illuminate\Support\MessageBag::__set_state(array(
'messages' =>
array (
'description' =>
array (
0 => 'Se requiere la descripción de la pregunta',
),
),
'format' => ':message',
)),
1 =>
Illuminate\Support\MessageBag::__set_state(array(
'messages' =>
array (
'description' =>
array (
0 => 'Se requiere la descripción de la pregunta',
),
),
'format' => ':message',
)),
),
)
As you can see I have two questions with errors. In order to return this to my client, when I do the following
if ( count($errors) > 0 ) {
throw ValidationException::withMessages($errors);
}
But when the data arrives at my client, the question errors are not complete. Instead of getting an index with an array of the questions errors, I only got one question error.
Does anyone know why this is happening? It seems like is grouping the errors in a single one.
Finally, I'm adding the entire method that computes the result:
public function Create($data) {
// Create array to handle all the nested resources
$errors = [];
// Validate that the data array is correct
$levelErrors = $this->ValidateDataAgainstModel($data);
if ( !is_null($levelErrors) ) {
$errors['level'] = $levelErrors;
}
$questionsErrors = [];
foreach($data['questions'] as $questionData) {
/*
* We remove the level_id because we are validating the
* question content
*/
$validationBook = Question::ValidationBook();
unset($validationBook['rules']['level_id']);
$questionErrors = QuestionService::ValidateDataAgainstModel($questionData, $validationBook);
if ( !is_null($questionErrors) ) {
$questionsErrors[$questionData['index']] = $questionErrors;
}
}
if ( count($questionsErrors) > 0 ) {
$errors['questions'] = $questionsErrors;
}
if ( count($errors) > 0 ) {
\Log::info($errors);
throw ValidationException::withMessages($errors);
}
// Create the object
$result = Level::create($data);
return $result;
}
I don't know if the problem is the withErrors method implementation that you can see here ValidationException Source Code