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 ('6d9024daff1423ea3d084b772b1d12ae','0','3.142.98.108','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1713528337','newthread.php?boardid=88&sid=f50e0900f11a0414d28c8430cc79681d','0','0','')
mysql error: Duplicate entry '6d9024daff1423ea3d084b772b1d12ae' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 19.04.2024 @ 14:05
Script: /newthread.php?boardid=88&sid=f50e0900f11a0414d28c8430cc79681d
Referer: http://wehrbauten.de/newthread.php?boardid=88&sid=f50e0900f11a0414d28c8430cc79681d