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 ('ce4f026a45adebebee689fa899554469','0','3.144.104.29','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715018768','jgs_portal_box.php?id=7&sid=85d3b54db1caa931ec7f1143cbf552a2','0','0','')
mysql error: Duplicate entry 'ce4f026a45adebebee689fa899554469' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 20:06
Script: /jgs_portal_box.php?id=7&sid=85d3b54db1caa931ec7f1143cbf552a2
Referer: http://wehrbauten.de/jgs_portal_box.php?id=7&sid=85d3b54db1caa931ec7f1143cbf552a2