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 ('65ab1d05fdde97b8d95675dd0c8d13c9','0','3.22.77.30','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715750948','board.php?boardid=91&sid=6b267aa9b0bc3ed5f86f7f42ecb2480c','0','0','')
mysql error: Duplicate entry '65ab1d05fdde97b8d95675dd0c8d13c9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 07:29
Script: /board.php?boardid=91&sid=6b267aa9b0bc3ed5f86f7f42ecb2480c
Referer: http://wehrbauten.de/board.php?boardid=91&sid=6b267aa9b0bc3ed5f86f7f42ecb2480c