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 ('3d187f1400407ab65c01524c1bafa226','0','3.16.70.101','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714949445','board.php?boardid=232&sid=db0e8f3532c1429cd64b47381a003a41','0','0','')
mysql error: Duplicate entry '3d187f1400407ab65c01524c1bafa226' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 00:50
Script: /board.php?boardid=232&sid=db0e8f3532c1429cd64b47381a003a41
Referer: http://wehrbauten.de/board.php?boardid=232&sid=db0e8f3532c1429cd64b47381a003a41