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 ('b7db7ccdcc40b5db9a9e6efe3aa7382e','0','18.224.44.108','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714560380','board.php?boardid=375&sid=6c77db266d7afea11c9f7f562aace910','0','0','')
mysql error: Duplicate entry 'b7db7ccdcc40b5db9a9e6efe3aa7382e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 01.05.2024 @ 12:46
Script: /board.php?boardid=375&sid=6c77db266d7afea11c9f7f562aace910
Referer: http://wehrbauten.de/board.php?boardid=375&sid=6c77db266d7afea11c9f7f562aace910