Duplicate Events breadcrumb

if(!function_exists('avia_events_breadcrumb'))
{
    add_filter('avia_breadcrumbs_trail','avia_events_breadcrumb');

    function avia_events_breadcrumb($trail)
    {
        global $avia_config, $wp_query;

        if(is_404() && isset($wp_query) && !empty($wp_query->tribe_is_event))
        {
            $events = __('Events','avia_framework');
            $events_link = '<a href="'.tribe_get_events_link().'">'.$events.'</a>';
            $last = array_pop($trail);
            $trail[] = $events_link;
            $trail['trail_end'] = __('No Events Found','avia_framework');
        }

        if((isset($avia_config['currently_viewing']) && $avia_config['currently_viewing'] == 'events') || tribe_is_month() || get_post_type() === Tribe__Events__Main::POSTTYPE || is_tax(Tribe__Events__Main::TAXONOMY) )
        {
            $events = __('Events','avia_framework');
            $events_link = '<a href="'.tribe_get_events_link().'">'.$events.'</a>';

            if(is_tax(Tribe__Events__Main::TAXONOMY) )
            {
                $last = array_pop($trail);
                $trail[] = $events_link;
                $trail[] = $last;
            }
            else if(tribe_is_month() || (tribe_is_upcoming() && !is_singular()))
            {
                //$trail[] = $events_link;
            }
            else if(tribe_is_event())
            {
                unset($trail[1]);
                $last = array_pop($trail);
                $trail[] = $events_link;
                $trail[] = $last;
            }

            if(isset($avia_config['events_trail'] )) $trail = $avia_config['events_trail'] ;
        }

        return $trail;
    }

}