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 ('a9b0ecf65f494f76e44462b4a12f92fe','0','3.17.78.182','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1734932873','thread.php?goto=nextnewest&threadid=1136','0','0','')
mysql error: Duplicate entry 'a9b0ecf65f494f76e44462b4a12f92fe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 23.12.2024 @ 06:47
Script: /thread.php?goto=nextnewest&threadid=1136
Referer: http://gttempel.de/thread.php?goto=nextnewest&threadid=1136