SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('d1e18ea703d52e4c5ef63d2e89765114','0','18.119.139.235','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745258740','thread.php?goto=firstnew_thread&threadid=339','0','0','')
mysql error: Duplicate entry 'd1e18ea703d52e4c5ef63d2e89765114' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 21.04.2025 @ 20:05
Script: /thread.php?goto=firstnew_thread&threadid=339
Referer: http://gttempel.de/thread.php?goto=firstnew_thread&threadid=339