Correct for non-UTF-8 characters in response arrays prior to JSON conversion

AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Overrides\Illuminate\Routing\ResponseFactory;
use Illuminate\Contracts\View\Factory as ViewFactoryContract;
use Illuminate\Contracts\Routing\ResponseFactory as ResponseFactoryContract;

/**
 * Class AppServiceProvider
 * @package App\Providers
 */
class AppServiceProvider extends ServiceProvider
    public function register()
    {
        $this->app->singleton(ResponseFactoryContract::class, function ($app) {
            return new ResponseFactory($app[ViewFactoryContract::class], $app['redirect']);
        });
    }
}

ResponseFactory.php

<?php

namespace App\Overrides\Illuminate\Routing;

use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Routing\ResponseFactory as BaseResponseFactory;

class ResponseFactory extends BaseResponseFactory
{
    /**
     * @inheritDoc
     */
    public function make($content = '', $status = 200, array $headers = [])
    {
        $content = ($self = function ($element) use (&$self) {
            $element = $element instanceof Arrayable ? $element->toArray() : $element;
            $element = is_array($element) ? array_map($self, $element) : $element;

            return is_string($element) ? utf8_encode($element) :$element;
        })($content);

        return parent::make($content, $status, $headers);
    }
}