Upgrade to 2.8

Here is what I get? Cannot upgrade and it states it is current

Fatal error: Cannot redeclare pclziputilpathreduction() (previously declared in /home/content/v/q/p/vqp24/html/chandler/wordpress262/wp-content/plugins/wordpress-automatic-upgrade/lib/pclzip.lib.php:5421) in /home/content/v/q/p/vqp24/html/chandler/wordpress262/wp-admin/includes/class-pclzip.php on line 5498

Thank You