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 ('a3cae0e2cd11ab5f1f20e425c1b2c1ba','0','3.15.229.113','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714922503','thread.php?goto=lastpost&threadid=1654&sid=90c853647d153c5c67e4289d0eb9f9e2','0','0','')
mysql error: Duplicate entry 'a3cae0e2cd11ab5f1f20e425c1b2c1ba' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 17:21
Script: /thread.php?goto=lastpost&threadid=1654&sid=90c853647d153c5c67e4289d0eb9f9e2
Referer: