SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('c7c3fc6d3d8c6cd9dba4fe9dc2596533','0','3.141.31.209','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715022374','board.php?boardid=233&sid=ab7d5f756ea6598c323b3f89d2f4fda5','0','0','')
mysql error: Duplicate entry 'c7c3fc6d3d8c6cd9dba4fe9dc2596533' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 21:06
Script: /board.php?boardid=233&sid=ab7d5f756ea6598c323b3f89d2f4fda5
Referer: