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 ('c1529f7ae026dd907b62bb456361d7a8','0','3.135.198.49','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714828366','board.php?boardid=96&sid=e852f1f8b850f2e5457ba59f2a5a25b0','0','0','')
mysql error: Duplicate entry 'c1529f7ae026dd907b62bb456361d7a8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 15:12
Script: /board.php?boardid=96&sid=e852f1f8b850f2e5457ba59f2a5a25b0
Referer: