Unresolvable dependency resolving - Mensagem de erro no SERIE CONTROLLER

Unresolvable dependency resolving [Parameter #0 [ $request ]] in class Illuminate\Http\Client\Request

Esta mensagem aparece no postman ao tentar incluir alguma serie.

Arquivos:

seriecontroller

<?php

namespace App\Http\Controllers;

use App\Serie;
use Illuminate\Http\Client\Request;


class SeriesController 
{
    public function index(){

        return Serie::all();
    }

    public function store(Request $request)
    {
        return response()
            ->json(
                Serie::create($request->all()),
                201
            );
    }
}

web.php

<?php

/** @var \Laravel\Lumen\Routing\Router $router */

$router->get('/', function () use ($router) {
    return $router->app->version();
});

//todas as rotas irao comer com o /api
$router->group(['prefix' => 'api'], function () use ($router){
    $router->get('series', 'SeriesController@index');
    $router->post('series', 'SeriesController@store');
});