SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('a0dd35b133cc94a609a609c5aacf6868','0','18.216.83.240','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714171872','profile.php?userid=42564&sid=028224415600d901b6cb9aa80de09ddf','0','0','')
mysql error: Duplicate entry 'a0dd35b133cc94a609a609c5aacf6868' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.5.55-0+deb7u1-log
php version: 5.4.45-0+deb7u14
Date: 27.04.2024 @ 00:51
Script: /profile.php?userid=42564&sid=028224415600d901b6cb9aa80de09ddf
Referer: http://forum.bloodwars.net/profile.php?userid=42564&sid=028224415600d901b6cb9aa80de09ddf