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 ('efc8394801dc4b973e3eca9db74bf76c','0','3.17.187.116','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715806017','thread.php?goto=lastpost&threadid=1928&sid=2f2d35811b8ba9d389aebf892171b280','0','0','')
mysql error: Duplicate entry 'efc8394801dc4b973e3eca9db74bf76c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 22:46
Script: /thread.php?goto=lastpost&threadid=1928&sid=2f2d35811b8ba9d389aebf892171b280
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1928&sid=2f2d35811b8ba9d389aebf892171b280