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 ('e8fcbd9a3e5d3173b9aa1d9193954fff','0','3.14.135.125','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715967015','board.php?boardid=66&sid=ac1554a30226f2c5ddfc4200e45abfe0','0','0','')
mysql error: Duplicate entry 'e8fcbd9a3e5d3173b9aa1d9193954fff' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 19:30
Script: /board.php?boardid=66&sid=ac1554a30226f2c5ddfc4200e45abfe0
Referer: