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 ('4e4284fd0b8757c84f86647a054fb68b','0','3.134.81.206','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715334867','profile.php?userid=26568&sid=21dfa266922c163bd46cdf9c87a1c4a1','0','0','')
mysql error: Duplicate entry '4e4284fd0b8757c84f86647a054fb68b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.1.41-3ubuntu12.3
php version: 4.4.9
Date: 10.05.2024 @ 11:54
Script: /wbb2/profile.php?userid=26568&sid=21dfa266922c163bd46cdf9c87a1c4a1
Referer: