I have an array like this :
thumbnailUrls[
0:{name: "1583146805644103424047.jpg", url: "http://localhost/app/public/images/xxx/58906245-4…1088da69ae3e/thumbnail_1583146805644103424047.jpg"}
1: {name: "1583146961187129982793.jpg", url: "http://localhost/app/public/images/xxx/58906245-4…1088da69ae3e/thumbnail_1583146961187129982793.jpg"
]
if i call on console thumbnailUrls[0]['url'] it shows the correct url: http://localhost/app/public/images/xxx/58906245-4756-4319-a706-1088da69ae3e/thumbnail_1583146805644103424047.jpg
but if i do this on dropzone js
  for (var i = 0; i < thumbnailUrls.length; i++) {
            var mockFile = { 
                name: thumbnailUrls[i]['name'], 
                size: 12345, 
                type: 'image/jpg', 
                status: Dropzone.ADDED, 
                url: thumbnailUrls[i]['url'] 
            };
            Dropzone.emit("addedfile", mockFile);
            Dropzone.emit("thumbnail", mockFile, thumbnailUrls[i]);
            Dropzone.files.push(mockFile);
        }
it gives the url with [object%20Object] like this:
http://localhost/app/listing/58906245-4756-4319-a706-1088da69ae3e/[object%20Object]