SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6.pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('47145cc096438cb668409836eda8c334','0','3.16.66.206','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715281440','board.php?boardid=4&sid=9b58e5e2d0666d2b3d13a5819fa4b04a','0','0','')
mysql error: Duplicate entry '47145cc096438cb668409836eda8c334' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.41
php version: 5.3.29
Date: 09.05.2024 @ 21:04
Script: /wbb2/board.php?boardid=4&sid=9b58e5e2d0666d2b3d13a5819fa4b04a
Referer: