Problema com POST PHP+JAVASCRIPT

[Michel Kuguio 3]

$.ajax({
                                    type: "POST",
                                    url: "/contato",
                                    data: {
                                        "name": $("#footer-form #name2").val(),
                                        "email": $("#footer-form #email2").val(),
                                        "fone": $("#footer-form #fone2").val(),
                                        "subject": $("#footer-form #subject2").val(),
                                        "message": $("#footer-form #message2").val()
                                    },
                                    dataType: "json",
                                    success: function (data) {
                                        if (data.sent == "yes") {
                                            $("#MessageSent2").removeClass("hidden");
                                            $("#MessageNotSent2").addClass("hidden");
                                            $(".submit-button").removeClass("btn-default").addClass("btn-success").prop('value', 'Mensagem enviada');
                                            $("#footer-form .form-control").each(function() {
                                                $(this).prop('value', '').parent().removeClass("has-success").removeClass("has-error");
                                            });
                                        } else {
                                            $("#MessageNotSent2").removeClass("hidden");
                                            $("#MessageSent2").addClass("hidden");
                                        }
                                    }
                                })

$router = new \Bramus\Router\Router();

// Check JWT on /secured routes. This can be any route you like
$router->before('GET', '/secured/.*', function () {

    // This method will exist if you're using apache
    // If you're not, please go to the extras for a defintion of it.
    $requestHeaders = apache_request_headers();
    $authorizationHeader = $requestHeaders['Authorization'];

    if ($authorizationHeader == null) {
        header('HTTP/1.0 401 Unauthorized');
        echo "No authorization header sent";
        exit();
    }
});
// Controllers API

$router->get('/ping', function () {
    $dado = array(
        "status" => 'ok',
        "message" => 'Everybody can do this...'
    );
    echo json_encode($dado);
});

$router->get('/secured/ping', function () {
    echo "All good. You only get this message if you're authenticated";
});

// Run the Router
$router->run();

// Activate CORS
function sendCorsHeaders()
{
    header("Access-Control-Allow-Origin: *");
    header("Access-Control-Allow-Headers: Authorization");
    header("Access-Control-Allow-Methods: GET,HEAD,PUT,PATCH,POST,DELETE");
}

$router->options('/.*', function () {
    sendCorsHeaders();
});
sendCorsHeaders();

erros:no-referrer-when-downgrade-origin-when-cross-origin

Provisional headers are show

eu ja tive esse problema anteriormente e usei essa classe + esses header para resolver em um site de um cliente problema que nesse site que estou trabalhando não está resolvendo.