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 ('c9a70e7026c8b2c573593f57624ddcc1','0','3.144.193.129','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715105962','thread.php?threadid=658&threadview=0&hilight=&hilightuser=0&sid=9d6d042f25961967172721b8af05c1be','0','0','')
mysql error: Duplicate entry 'c9a70e7026c8b2c573593f57624ddcc1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 20:19
Script: /thread.php?threadid=658&threadview=0&hilight=&hilightuser=0&sid=9d6d042f25961967172721b8af05c1be
Referer: