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 ('ae4b00e87baf5dd1fe32a7d02bc65ebc','0','3.145.199.140','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715825506','newthread.php?boardid=83&sid=36933f2aa6ffb451d62857d02d51907d','0','0','')
mysql error: Duplicate entry 'ae4b00e87baf5dd1fe32a7d02bc65ebc' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 04:11
Script: /newthread.php?boardid=83&sid=36933f2aa6ffb451d62857d02d51907d
Referer: http://wehrbauten.de/newthread.php?boardid=83&sid=36933f2aa6ffb451d62857d02d51907d