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 ('f4049240e4bdf45f7057a7e522e1b208','0','3.141.8.247','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715068199','index.php?sid=3cf4685d7a89c4db026381755881c488','0','0','')
mysql error: Duplicate entry 'f4049240e4bdf45f7057a7e522e1b208' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 09:49
Script: /index.php?sid=3cf4685d7a89c4db026381755881c488
Referer: http://wehrbauten.de/index.php?sid=3cf4685d7a89c4db026381755881c488