How to download file from path - Flask?

Question

Flask

In my application, I made sure that the files themselves are loaded into a directory and the path to these directories is stored in the database. Now I can't add a function that downloads files directly from directory
here is my code:

app.config['UPLOAD_FOLDER'] = '/Users/a10.12/PycharmProjects/QuestionAnswer/debugger/static/files'

def save_file(form_file):
    random_hex = secrets.token_hex(8)
    _, f_ext = os.path.splitext(form_file.filename)
    picture_fn = random_hex + f_ext
    picture_path = os.path.join(app.root_path, 'static/files', picture_fn)
    form_file.save(picture_path)
    return picture_fn

@app.route('/ticket/<int:ticket_id>',methods=['GET','POST'])
@login_required
def ticket(ticket_id):
    ticket = Tickets.query.get_or_404(ticket_id)
    com = Comment.query.filter_by(ticket_id=ticket.id).first()
    form = CommentForm()
    attachform = AttachForm()
    if form.validate_on_submit() and form.body.data:
        comment = Comment(body=form.body.data,ticket_id=ticket_id,author = current_user.username)
        db.session.add(comment)
        db.session.commit()
        flash('Your comment has been published.')
        return redirect(url_for('ticket', ticket_id=ticket_id))
    if attachform.validate_on_submit():
        if attachform.file.data:
            picture_file = save_file(attachform.file.data)
            attachment = Attachment(file=picture_file,ticket_id=ticket_id)
            db.session.add(attachment)
        db.session.commit()
        flash('Your file has been published.')
        return redirect(url_for('ticket', ticket_id=ticket_id))
    file = url_for('static', filename='files/' + str(ticket.attach))
    return render_template('ticket.html', title=ticket.title,file=file ,ticket=ticket,form=form,comment=com,attachform=attachform)

and here is what I tried to create in order to download the file

@app.route('/uploads/<path:filename>', methods=['GET', 'POST'])
def download(filename):
    uploads = os.path.join(app.root_path, app.config['UPLOAD_FOLDER'])
    return send_from_directory(directory=uploads, filename=filename, as_attachment=True)

front end html

{% for file in ticket.attach %}
            <ul class="list-group">
                <a href="{{ url_for('download', filename=file) }}" download class="list-group-item list-group-item-action"> {{ file }}</a>
            </ul>
        {% endfor %}

when I click on the download button nothing is downloaded "No File"!