I am new to Django. I am trying to add Navigation bar to each page, so when I go to one of page (say about) and then from there when I go to another (say contact) path error occurs.
Here in navigation.html
<nav>
    <ul>
        <li>
            <a href="{% url 'reports:index' %}">Reports</a>
        </li>
        <li>
            <a href="about">About us</a>
        </li>
        <li>
            <a href="contact">Contact us</a>
        </li>
    </ul>
</nav>  
So I want, how should I clear my route and go to any nav pages from any current page.



 
     
    