dropzone.js How to hide progress bar of uploaded files?

Hello guys,

on beginning i want to say this script is really awesome :)

i want to integrate with Laravel, working fine, function return true or error, but if my function return true progress bar of uploaded files is still visible.

var previewNode = document.querySelector("#template");
        previewNode.id = "";
        var previewTemplate = previewNode.parentNode.innerHTML;
        previewNode.parentNode.removeChild(previewNode);

        var myDropzone = new Dropzone(document.body, { // Make the whole body a dropzone
            url: "/admins/gallery/upload", // Set the url
            headers: {
                'x-csrf-token': document.querySelectorAll('meta[name=csrf-token]')[0].getAttributeNode('content').value,
            },
            thumbnailWidth: 220,
            parallelUploads: 20,
            previewTemplate: previewTemplate,
            autoQueue: false,
            previewsContainer: "#previews",
            clickable: ".fileinput-button"
        });

        myDropzone.on("addedfile", function(file) {
            // Hookup the start button
            file.previewElement.querySelector(".start").onclick = function() { myDropzone.enqueueFile(file); };
        });

        myDropzone.on("totaluploadprogress", function(progress) {
            document.querySelector("#total-progress .progress-bar").style.width = progress + "%";
        });

        myDropzone.on("sending", function(file) {
            document.querySelector("#total-progress").style.opacity = "1";
            file.previewElement.querySelector(".start").setAttribute("disabled", "disabled");
        });

        myDropzone.on("queuecomplete", function(progress) {
            document.querySelector("#total-progress").style.opacity = "0";
        });

        document.querySelector("#actions .start").onclick = function() {
            myDropzone.enqueueFiles(myDropzone.getFilesWithStatus(Dropzone.ADDED));
        };
        document.querySelector("#actions .cancel").onclick = function() {
            myDropzone.removeAllFiles(true);
        };

php function

        $image = $request->file('file');
        $imageName = md5(uniqid(rand(), true) . $image) . '.' . $image->getClientOriginalExtension();
        $upload_success = $image->move(public_path('images'),$imageName);

        if ($upload_success) {
            return response()->json(true, 200);
        }
        // Else, return error 400
        else {
            return response()->json('error', 400);
        }

template html

            <div id="actions" class="row">

                <div class="col-md-7">
                    <!-- The fileinput-button span is used to style the file input field as button -->
                    <span class="btn btn-flat btn-success fileinput-button dz-clickable">
                <i class="glyphicon glyphicon-plus"></i>
                <span>Add files...</span>
                        </span>
                    <button type="submit" class="btn btn-flat btn-primary start">
                        <i class="glyphicon glyphicon-upload"></i>
                        <span>Start upload</span>
                    </button>
                    <button type="reset" class="btn btn-flat btn-warning cancel">
                        <i class="glyphicon glyphicon-ban-circle"></i>
                        <span>Cancel upload</span>
                    </button>
                </div>

                <div class="col-lg-5">
                   <span class="fileupload-process">
          <div id="total-progress" class="progress progress-striped active" role="progressbar" aria-valuemin="0"
               aria-valuemax="100" aria-valuenow="0">
                        <div class="progress-bar progress-bar-success" style="width:0%;"
                             data-dz-uploadprogress=""></div>
                    </div>
                    </span>
                </div>
                <div class="clearfix">&nbsp;</div>
            </div>
            <div class="row" class="files" id="previews">

                <div id="template" class="file-row col-md-3">
                    <!-- This is used as the file preview template -->
                    <div>
                        <div class="preview"><img data-dz-thumbnail class="img-thumbnail"/></div>
                    </div>
                    <div>
                        <strong class="error text-danger" data-dz-errormessage></strong>
                    </div>
                    <div>
                        <p class="size" data-dz-size></p>
                        <div class="progress progress-striped active" role="progressbar" aria-valuemin="0"
                             aria-valuemax="100" aria-valuenow="0">
                            <div class="progress-bar progress-bar-success" style="width:0%;"
                                 data-dz-uploadprogress></div>
                        </div>
                    </div>
                    <div class="text-center">
                        <button class="btn btn-flat btn-sm btn-primary start">
                            <i class="glyphicon glyphicon-upload"></i>
                            <span>Start</span>
                        </button>
                        <button data-dz-remove class="btn btn-flat btn-sm btn-warning cancel">
                            <i class="glyphicon glyphicon-ban-circle"></i>
                            <span>Cancel</span>
                        </button>
                        <button data-dz-remove class="btn btn-flat btn-sm btn-danger delete">
                            <i class="glyphicon glyphicon-trash"></i>
                            <span>Delete</span>
                        </button>
                    </div>
                </div>

            </div>