Error message

• Warning: Undefined array key "und" in include() (line 7 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).
• Warning: Trying to access array offset on value of type null in include() (line 7 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).
• Warning: Trying to access array offset on value of type null in include() (line 7 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).
• Warning: Undefined array key "und" in include() (line 8 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).
• Warning: Trying to access array offset on value of type null in include() (line 8 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).
• Warning: Trying to access array offset on value of type null in include() (line 8 of /home/mediline/public_html/sites/all/themes/nevia/templates/node--videos.tpl.php).