Exception class: PDOException()

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '172.71.254.124' for key 'ip'


Backtrace:

#0 /var/www/html/system/libs/visitors.php(97): PDO->exec()
#1 /var/www/html/system/libs/visitors.php(40): Visitors->addVisitor()
#2 /var/www/html/index.php(244): Visitors->__construct()
#3 {main}