How to use uploaded files?

Hello,

I try to use uploaded file with tus in front side, but I can’t.

Client

this.uppy = new Uppy({
            id           : 'uppy-input',
            autoProceed  : true,
            locale       : this.getUppyTranslations(props.i18n.language),
            debug        : true,
            restrictions : {
                maxFileSize      : 1000000,
                maxNumberOfFiles : 1,
                allowedFileTypes : ['image/*'],
            },
        })
            .use(Webcam)
            .use(Instagram, {
                companionUrl : process.env.REACT_APP_SERVER_URL,
            })
            .use(Tus, {
                endpoint                   : `${process.env.REACT_APP_SERVER_URL}/uploads`,
                resume                     : true,
                removeFingerprintOnSuccess : true,
                limit                      : 1,
            });
    this.uppy.on('upload-success', (file, response) => {
                console.log(file);
                console.log(response);
                var img = new Image()
                img.width = 300
                img.alt = file.id
                img.src = response.uploadURL
                document.body.appendChild(img)
            });

“response.uploadURL” return nothing, when I call it, I receive a 404 error

Server

const server = new tus.Server();
server.datastore = new tus.FileStore({
    path : '/files',
});

server.on(tus.EVENTS.EVENT_UPLOAD_COMPLETE, (event) => {
    console.log(`Upload complete for file ${event.file.id}`);
});
server.on(tus.EVENTS.EVENT_ENDPOINT_CREATED, (event) => {
    console.log('New endpoint', event);
});
dotenv.config();

const { PORT } = process.env;

const app = express();

app.set('port', PORT || 8080);


const uploadApp = express();
uploadApp.all('*', server.handle.bind(server));
app.use('/uploads', uploadApp);

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended : false }));

app.listen(PORT, () => {
    logger.info(`App listening on port ${PORT}!`);
});

Someone can help me to undestand why ?
Thanks in advance