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 ('2d813845cdb23f868fa0379aceac6a1e','0','18.221.239.148','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714671551','board.php?boardid=519&sid=232fe7ca0ab2c9162f7e0f6ccec29ba8','0','0','')
mysql error: Duplicate entry '2d813845cdb23f868fa0379aceac6a1e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 19:39
Script: /board.php?boardid=519&sid=232fe7ca0ab2c9162f7e0f6ccec29ba8
Referer: http://wehrbauten.de/board.php?boardid=519&sid=232fe7ca0ab2c9162f7e0f6ccec29ba8