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 ('56e219976a4e05bdbc8079d3eb433357','0','3.144.42.196','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715112711','thread.php?goto=lastpost&threadid=1476&sid=65d33fb26437fe0da0a16d189b47fa5f','0','0','')
mysql error: Duplicate entry '56e219976a4e05bdbc8079d3eb433357' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 22:11
Script: /thread.php?goto=lastpost&threadid=1476&sid=65d33fb26437fe0da0a16d189b47fa5f
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1476&sid=65d33fb26437fe0da0a16d189b47fa5f