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 ('313eb3906bcbd3d449972867067bd5e9','0','18.190.217.134','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715258180','board.php?boardid=160&sid=79b0920c76ae9e9b4dfee10fb09593e9','0','0','')
mysql error: Duplicate entry '313eb3906bcbd3d449972867067bd5e9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 14:36
Script: /board.php?boardid=160&sid=79b0920c76ae9e9b4dfee10fb09593e9
Referer: http://wehrbauten.de/board.php?boardid=160&sid=79b0920c76ae9e9b4dfee10fb09593e9