Flask site can't get static files

I developed a website using flask and in my computer everthing runs ok using localhost. But when i deploy the code it returns 404 to every static file. The server codes is basic like this excluding what don't makes difference: app = Flask(__name__, template_folder='templates', static_folder='static') @app.route('/') def index(): if 'logged_in' in session and session['logged_in'>: credits = database.get_user_credit(session['username'>) free_roll = database.is_free_roll(session['username'>) session['credits'> = credits else: free_roll = False credits = 0 return render_template('index.html', translate=keys['translate'>, credits=credits, free_roll=free_roll) and in my html i call the statics file like this: I'm pretty sure the code is correct cause when running in localhost no problem show up, and i more than double check if the code is similar and the folder structures aswell. So, if someone could help I would be very grateful.