Error message

Notice: Trying to access array offset on value of type null in rhythm_pager() (line 611 of /home/scottswinton/public_html/sites/all/themes/rhythm/template.php).

Notice: Trying to access array offset on value of type null in rhythm_pager() (line 633 of /home/scottswinton/public_html/sites/all/themes/rhythm/template.php).