Fatal error: Duplicate entry '249786' for key 'PRIMARY'

Query: INSERT INTO GDE_App_Web_Users_Auth SET Session_ID = '4l6g4ktd7ddqntumnfu2c2i4c1', IP = '216.73.216.222', Login_Date = CURRENT_TIMESTAMP, Last_Access_Date = CURRENT_TIMESTAMP, Request_URI = '/sitemap.xml'; in /usr/local/www/data/ledy.cz/eshop/GE/lib/GE.MySQL.lib.php on line 238