Custom validation rule with request class not working laravel 7

Below is my code;

FruitRequest.php

class FruitRequest extends Request
{

public function authorize()
{
    return true;
}

public function rules()
{
    return [
        'name' => 'required|alpha',
        'image' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048'
    ];
}

public function messages()
{
    return ['name.required' => response("Name should be mandatory", 404),
        'name.alpha' => response("Name should be contains only letters", 404),
        'image.required' => response("Foto should be mandatory", 404),
        'image.mimes' => response('Foto should be jpeg,png,jpg,gif,svg', 404),
        'image.max' => response('Foto size should be blow 2 MB', 404),
    ];
}

}

FruitController.php

use App\Http\Controllers\Controller;
use App\Http\Requests\FruitRequest;

class FruitController extends Controller
{

public function store(FruitRequest $request)
{
    echo $request->input('name');

    //above line gives nothing to me
}

}

If I use extends Request instead of extends FruitRequest then this gives me value which is passed by user in postman. I don't know why this custom Request class not working. Please help....

via Chebli Mohamed