Set Subject 'Very big or very small': 20/20 score 'The smallest mouse species in the UK'

Error message

• Notice: Trying to get property 'nid' of non-object in include() (line 120 of sites/all/themes/ccw/templates/node--club_gallery_image.tpl.php).
• Notice: Trying to get property 'title' of non-object in include() (line 120 of sites/all/themes/ccw/templates/node--club_gallery_image.tpl.php).