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 ('45121b87bfcc1164fa2dc6c17e8d0446','0','3.21.233.41','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714954434','index.php?sid=f2a01e793105562e797e5ed0285b1d73','0','0','')
mysql error: Duplicate entry '45121b87bfcc1164fa2dc6c17e8d0446' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 02:13
Script: /index.php?sid=f2a01e793105562e797e5ed0285b1d73
Referer: http://wehrbauten.de/index.php?sid=f2a01e793105562e797e5ed0285b1d73