Php ckeditor textarea 的内容不通过 Ajax Jquery 发送

我有一个带有输入和文本区域(ckeditor)的表单，在用ajax提交表单后，所有输入字段的值都被发送到数据库表，但ckeditor textarea除外，我不知道为什么！

我在这里用同样的问题try 了一些解决方案，但没有脉络！

HTML PART

<form id="submitForm">
... some inputs ...

<textarea class="form-control" name="details" rows="6" id="product-details"></textarea>

<button class="btn btn-solid btn-rounded" id='publish' type="submit"> SAVE </button>

</form>

JS PART

$(document).ready(function() {
                       
    ClassicEditor.create( document.querySelector("#product-details"), {
        toolbar: {
            items: [
                "heading", "|",
                "alignment", "|",
                "bold", "italic", "strikethrough", "underline", "subscript", "superscript", "|",
                "link", "|",
                "bulletedList", "numberedList", "todoList",
                "-", // break point
                "fontfamily", "fontsize", "fontColor", "fontBackgroundColor", "|",
                "code", "codeBlock", "|",
                "insertTable", "|",
                "outdent", "indent", "|",
                "uploadImage", "blockQuote", "|",
                "undo", "redo"
            ],
            shouldNotGroupWhenFull: false
        }
    });

$("#submitForm").on('submit', function(e) {
        e.preventDefault();
        
        $.ajax({
            type: 'POST',
            url: 'ajax/create-product.php',
            data: new FormData(this),
            dataType: 'json',
            contentType: false,
            cache: false,
            processData: false,
            beforeSend: function() {
                $("#publish").prop("disabled", true);
            },
            success: function(response) {                
                if (response.status == '1') {
                    Command: toastr["success"](response.message, "")
                    window.location.href = response.url;
                
                } else {
                    $("#publish").prop("disabled", false);
                    Command: toastr["error"](response.message, "")
                }
            }
        });
    });   
});