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 ('7fb883659e764fdf0e04888cb6f81ad6','0','18.118.193.7','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715427381','markread.php?boardid=279&sid=1387690730241043c7677f10a86dabe7','0','0','')
mysql error: Duplicate entry '7fb883659e764fdf0e04888cb6f81ad6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 13:36
Script: /markread.php?boardid=279&sid=1387690730241043c7677f10a86dabe7
Referer: