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 ('af02440dc46bdfeefc47fdba7a4bf88a','0','3.145.115.195','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715000888','index.php?sid=9346197875f4758ad59839e4f310ed11','0','0','')
mysql error: Duplicate entry 'af02440dc46bdfeefc47fdba7a4bf88a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 06.05.2024 @ 13:08
Script: /index.php?sid=9346197875f4758ad59839e4f310ed11
Referer: http://www.biker-community.com/index.php?sid=9346197875f4758ad59839e4f310ed11