Error creating fine tune with default params

[JoseLuisRNP]

I facing a problem with the default params in open ai api fine tunes
Triyng creating a fine tunes with this code:

 $responseFineTuning = $openAIClient->fineTunes()->create([
    'training_file' => 'my_file_id',
    'model' => 'davinci',
]);

result in a trhow

 TypeError 

  OpenAI\Responses\FineTunes\RetrieveResponseHyperparams::__construct(): Argument #1 ($batchSize) must be of type int, null given, called in /code/vendor/openai-php/client/src/Responses/FineTunes/RetrieveResponseHyperparams.php on line 39

  at vendor/openai-php/client/src/Responses/FineTunes/RetrieveResponseHyperparams.php:20
     16▕      * @use ArrayAccessible<array{batch_size: int, learning_rate_multiplier: float, n_epochs: int, prompt_loss_weight: float}>
     17▕      */
     18▕     use ArrayAccessible;
     19▕ 
  ➜  20▕     private function __construct(
     21▕         public readonly int $batchSize,
     22▕         public readonly float $learningRateMultiplier,
     23▕         public readonly int $nEpochs,
     24▕         public readonly float $promptLossWeight,

      +3 vendor frames 
  4   app/App/Console/Commands/GenerateFineTuning.php
      OpenAI\Resources\FineTunes::create(["file-XXXXXXXXXXXXX", "davinci"])

      +13 vendor frames 
  18  artisan:37
      Illuminate\Foundation\Console\Kernel::handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))

Looking the api $batchSize is optional param and null by default

[gehrisandro]

@JoseLuisRNP thank you for raising the issue.

It has been fixed in v0.2.1