SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Invalid SQL: INSERT INTO bb1_sessions VALUES ('5575b5f9c4b73f82e0ecf315b1d906eb','0','54.242.236.164','CCBot/2.0 (http://commoncrawl.org/faq/)','1519345092','calender.php?sid=5575b5f9c4b73f82e0ecf315b1d906eb','0','0','0')
mysql error: Duplicate entry '5575b5f9c4b73f82e0ecf315b1d906eb' for key 'PRIMARY'
mysql error number: 1062
Date: 23.02.2018 @ 01:18
Script: /board/calender.php?sid=5575b5f9c4b73f82e0ecf315b1d906eb
Referer: