MySQL Error Occured
1062: Duplicate entry '2c639fd2711f688944a8d41a6e3e5bd1' for key 'PRIMARY'

QUERY = INSERT INTO sessions (`location`, `sessId`, `timeStart`, `timeLast`, `customer_id`) VALUES ('/index.php?act=viewCat&catId=21', '2c639fd2711f688944a8d41a6e3e5bd1', '1791868775', '1791868775', 0)