Error message

• Notice: Undefined offset: 0 in include() (line 23 of /home/matchref/public_html/sites/all/themes/Porto_sub/sites/all/themes/Porto/templates/node--twitter-feed.tpl.php).
• Notice: Undefined offset: 0 in include() (line 25 of /home/matchref/public_html/sites/all/themes/Porto_sub/sites/all/themes/Porto/templates/node--twitter-feed.tpl.php).
• Notice: Undefined offset: 0 in include() (line 56 of /home/matchref/public_html/sites/all/themes/Porto_sub/sites/all/themes/Porto/templates/node--twitter-feed.tpl.php).