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 ('88a1c2d4455d1c0dd5ef60c22ad65983','0','3.140.186.241','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715336805','board.php?boardid=372&sid=01f6228ada9f621ce5e8d37d48076005','0','0','')
mysql error: Duplicate entry '88a1c2d4455d1c0dd5ef60c22ad65983' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 12:26
Script: /board.php?boardid=372&sid=01f6228ada9f621ce5e8d37d48076005
Referer: http://wehrbauten.de/board.php?boardid=372&sid=01f6228ada9f621ce5e8d37d48076005