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 ('d312212b1d6a1e599e56122d00ac0242','0','3.134.90.44','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714877457','board.php?boardid=77&sid=c4097882dbcb450dc5f5470021b50196','0','0','')
mysql error: Duplicate entry 'd312212b1d6a1e599e56122d00ac0242' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 04:50
Script: /board.php?boardid=77&sid=c4097882dbcb450dc5f5470021b50196
Referer: http://wehrbauten.de/board.php?boardid=77&sid=c4097882dbcb450dc5f5470021b50196