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 ('a970757c496d6980ac9a0a179e7c87c5','0','3.137.157.45','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715290440','profile.php?userid=23785&sid=d1b9faa0b20e73a2f12debd7aa5261ed','0','0','')
mysql error: Duplicate entry 'a970757c496d6980ac9a0a179e7c87c5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.1.41-3ubuntu12.3
php version: 4.4.9
Date: 09.05.2024 @ 23:34
Script: /wbb2/profile.php?userid=23785&sid=d1b9faa0b20e73a2f12debd7aa5261ed
Referer: