Laravel: Send Data to Controller via AJAX Without Form

I need to send data via JS to a Laravel controller on a button click. I'm not using any form because the data is being created dynamically. Every time i try to send the data, i get an Internal Server Error (500), but unable to catch that exception in the controller or the laravel.log file.

Here's what i'm doing:

Route:

Route::post('section/saveContactItems', 'SectionController@saveContactItems');

Controller:

public function saveContactItems($id, $type, $items, $languageID = "PT"){ ... }

JS:

$('button').on("click", function (evt) {

    evt.preventDefault();

    var items = [];
    var id = $("#id").val();
    var languageID = $("#languageID").val();
    var data = { id: id, type: type, items: JSON.stringify(items), languageID: languageID };

    $.ajax({
        url: "/section/saveContactItems",
        type: "POST",
        data: data,
        cache: false,
        contentType: 'application/json; charset=utf-8',
        processData: false,
        success: function (response)
        {
            console.log(response);
        }
    });
});

What am i doing wrong? How can i accomplish this?

via Chebli Mohamed