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 ('c2dbcb93e1eaf6c7b7251372f2ad5a94','0','18.223.149.74','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715608927','thread.php?goto=lastpost&threadid=2500&sid=d416eb29f233837574ae2b4c24edd4ce','0','0','')
mysql error: Duplicate entry 'c2dbcb93e1eaf6c7b7251372f2ad5a94' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 16:02
Script: /thread.php?goto=lastpost&threadid=2500&sid=d416eb29f233837574ae2b4c24edd4ce
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2500&sid=d416eb29f233837574ae2b4c24edd4ce