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 ('aa01b5fb94dfe8e0a0639891b54e361a','0','18.118.82.92','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745169457','thread.php?goto=firstnew_thread&threadid=2375','0','0','')
mysql error: Duplicate entry 'aa01b5fb94dfe8e0a0639891b54e361a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 20.04.2025 @ 19:17
Script: /thread.php?goto=firstnew_thread&threadid=2375
Referer: http://gttempel.de/thread.php?goto=firstnew_thread&threadid=2375