Because of what can be 422 response during validation?

Question

Laravel

Ajax send data to the controller in the controller is:

namespace App\Http\Controllers\Ajax;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;

class ContactController extends Controller
{
    public function miniform(Request $request){
    $this->validate($request, [
        'name' => 'required',
        'email' => 'email',
        'phone' => 'numeric',
    ]);
    }
}

In the browser console I see the answer 422
Tried to overlay dd and denigrate - always 422
What could be the problem?
UPD

var Data = {name: Name, email: Email, phone: Phone};
                            $.ajax({
                                method: "POST",
                                url: "/api/contact/miniform",
                                data: Data
                            }).done(function( msg ) {
                                alert( msg );
                            });

UPD2

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Answer 1

https://laravel.com/docs/5.4/validation#form-reque...
In the last paragraph, search the page, find 422, it is written about this, this is a normal server response