How can Symfony 2 developers effectively troubleshoot issues related to integrating external CSS/JS libraries like Twitter Bootstrap?

To effectively troubleshoot issues related to integrating external CSS/JS libraries like Twitter Bootstrap in Symfony 2, developers should ensure that the library files are correctly linked in the template files and that there are no conflicts with other CSS/JS files. They can also use browser developer tools to inspect the elements and debug any styling or functionality issues.

// Example of linking Twitter Bootstrap CSS and JS files in Symfony 2 template file

{% block stylesheets %}
    <link rel="stylesheet" href="{{ asset('path/to/bootstrap/css/bootstrap.min.css') }}">
{% endblock %}

{% block javascripts %}
    <script src="{{ asset('path/to/bootstrap/js/bootstrap.min.js') }}"></script>
{% endblock %}