octree is empty. Skip building this for now.
            #}
            {% if 'singlehtml' not in builder %}
              {% set global_toc = toctree(maxdepth=theme_navigation_depth|int,
                                          collapse=theme_collapse_navigation|tobool,
                                          includehidden=theme_includehidden|tobool,
                                          titles_only=theme_titles_only|tobool) %}
            {% endif %}
            {% if global_toc %}
              {{