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 ('3b9479fef9c4c6fcd63d849c1784363c','0','3.144.75.143','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715708318','profile.php?userid=242&sid=b0083c228fa1a4ffb4e8e5301c12e15e','0','0','')
mysql error: Duplicate entry '3b9479fef9c4c6fcd63d849c1784363c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 19:38
Script: /profile.php?userid=242&sid=b0083c228fa1a4ffb4e8e5301c12e15e
Referer: http://wehrbauten.de/profile.php?userid=242&sid=b0083c228fa1a4ffb4e8e5301c12e15e