> For the complete documentation index, see [llms.txt](https://pactode.gitbook.io/laravel-shopify/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pactode.gitbook.io/laravel-shopify/usage/custom-error-handling.md).

# Custom Error Handling

You can overwrite the error handling for each request by binding your own instance of a class that implements the `ErrorHandlerInterface`.

The default handler looks like this:

```php
use Illuminate\Http\Client\Response;

class Handler implements ErrorHandlerInterface
{
    public function handle(Response $response)
    {
        if ($response->successful()) {
            return;
        }

        if ($response->status() === 429) {
            throw new TooManyRequestsException($response);
        }

        if ($response->status() === 422) {
            throw new ValidationException($response->json('errors', []));
        }

        if ($response->status() === 404) {
            throw new NotFoundException();
        }

        $response->throw();
    }
}
```

### Register the new handler

To replace the existing one, add the following to your `AppServiceProvider` or a similar provider.

```php
// within the `register` method
$this->app->bind(ErrorHandlerInterface::class, Handler::class);
```