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 ('16be43fea5ede1b681466251f0491325','0','3.143.9.115','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715181905','thread.php?postid=11156&sid=8192c4ca34fc03678216c38d7a7ce070','0','0','')
mysql error: Duplicate entry '16be43fea5ede1b681466251f0491325' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 17:25
Script: /thread.php?postid=11156&sid=8192c4ca34fc03678216c38d7a7ce070
Referer: https://www.wehrbauten.de/thread.php?goto=lastpost&threadid=2254&sid=0d3412985c9d43e13f20ffee1bad9e75