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 ('c8cb1425eefaea320c527acc05f3baf8','0','3.144.38.24','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715514255','board.php?boardid=263&sid=fde89c441a04f3d4b70cf1e1abf31a0c','0','0','')
mysql error: Duplicate entry 'c8cb1425eefaea320c527acc05f3baf8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 13:44
Script: /board.php?boardid=263&sid=fde89c441a04f3d4b70cf1e1abf31a0c
Referer: http://wehrbauten.de/board.php?boardid=263&sid=fde89c441a04f3d4b70cf1e1abf31a0c