Template Error

Impossible to access an attribute ("title") on a null variable.

/home/david/website/craft/templates/tours/_entry.html(6)

01 {% extends "_layout" %}
02 {% set bodyId = "tour" %}
03 {% if entry.sport|length > 1 %}
04     {% set title = "Sports Tour of " ~ entry.title %}
05 {% else %}
06     {% set title = entry.sport.first().title ~ " Tour of " ~ entry.title %}
07 {% endif %}
08 
09 {% block afterBody %}
10     <div id="fb-root"></div>
11     <script>(function(d, s, id) {
12       var js, fjs = d.getElementsByTagName(s)[0];
13       if (d.getElementById(id)) return;
14       js = d.createElement(s); js.id = id;
15       js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.0";
16       fjs.parentNode.insertBefore(js, fjs);
17     }(document, 'script', 'facebook-jssdk'));</script>
18     
2024-03-28 20:44:18 LiteSpeed / Craft CMS 2.7.4