Error message

• Notice: Trying to access array offset on value of type null in bootstrap_pager() (line 53 of /var/www/virtual/riccardo.is/europa.is/test/htdocs/sites/all/themes/bootstrap/templates/system/pager.func.php).
• Notice: Trying to access array offset on value of type null in bootstrap_pager() (line 95 of /var/www/virtual/riccardo.is/europa.is/test/htdocs/sites/all/themes/bootstrap/templates/system/pager.func.php).