How to delete files blueimp - jQuery File Upload

i just trying to implement blueimp - jQuery File Upload. Upload works fine, but i can`t delete files.

    <script>
    $(function () {
        'use strict';
        $.ajaxSetup({ headers: { 'X-CSRF-TOKEN': '' } });

        $('#fileupload').fileupload({
            url: '',
            type: 'POST',
            formData: {gallery_id:'' },
            previewMaxWidth: 200,
            previewMaxHeight: 125,
            acceptFileTypes: /(\.|\/)(jpe?g|png)$/i,
            maxFileSize: 10240000,
            minFileSize: undefined,
            maxNumberOfFiles: 8,
            dataType: 'json'
        });


    });
</script>

jquery code, It working fine, but when i want to delete uploaded file i getting response

{"":false}

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