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 ('8dd040af932acfd4ec8709e6567c44d1','0','18.118.252.87','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715963793','board.php?boardid=104&daysprune=1000&sortfield=topic&sortorder=DESC&sid=66d80cccd9f15310de2a3ddd3af0b0bf','0','0','')
mysql error: Duplicate entry '8dd040af932acfd4ec8709e6567c44d1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 18:36
Script: /board.php?boardid=104&daysprune=1000&sortfield=topic&sortorder=DESC&sid=66d80cccd9f15310de2a3ddd3af0b0bf
Referer: