Kendo filemanager not working properly, and how to use datasource by function properly

I have some difficulty getting data from a Json Url into a Kendo FileManager.

When you click on each file, there will be a yellow error message as shown. It does not show the corresponding data inside of each file.

The Json data url I put in has the structure as shown

Anyone who knows about using Kendo FileManager can hopefully help me. Thank you

the code I use to process

$("#filemanager").kendoFileManager({
        dataSource: {
            transport: {
                read: function (options) {
                    var that = this;

                    $.ajax({
                        url: "/_layouts/15/xxx/API/ApiHandler.ashx?tbl=like&func=getalllibrary",
                        dataType: "json",
                        method: "POST",
                        data: that.parameterMap ? that.parameterMap(options.data, "read") : options.data,
                        success: function (result) {
                            options.success(result);
                        }
                    });
                },
                
                
            },
            schema: {
                data: 'data',

            }
        },
        toolbar: {
            items: [
                { name: "custom", type: "button", text: "Create", command: "MyCustomCommandCreate" },
                { name: "custom", type: "button", text: "Upload", command: "MyCustomCommandUpload" },
                { name: "sortDirection" },
                { name: "sortField" },
                { name: "changeView" },
                { name: "spacer" },
                { name: "details" },
                { name: "search" }
            ]
        },
        contextMenu: {
            items: [
                { name: "rename" },
                { name: "delete" },
                { name: "custom", text: "Detect", command: "MyCustomCommandDetect", spriteCssClass: "k-icon k-i-info" }
            ]
        },
        draggable: true,
        resizable: true
    });