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 ('cb7a11520e17dde9849a61911e82ccfd','0','3.141.100.120','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714866585','thread.php?threadid=1865&sid=87fbd459acc7e9b709e671918780f220','0','0','')
mysql error: Duplicate entry 'cb7a11520e17dde9849a61911e82ccfd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 01:49
Script: /thread.php?threadid=1865&sid=87fbd459acc7e9b709e671918780f220
Referer: http://wehrbauten.de/thread.php?threadid=1865&sid=87fbd459acc7e9b709e671918780f220