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 ('f66dfa15315a425ef0ad17e34c89dbb2','0','3.137.188.11','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715318349','thread.php?goto=lastpost&threadid=2490&sid=dd8abed8b227a3bcf4945f7c2ab561e1','0','0','')
mysql error: Duplicate entry 'f66dfa15315a425ef0ad17e34c89dbb2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 07:19
Script: /thread.php?goto=lastpost&threadid=2490&sid=dd8abed8b227a3bcf4945f7c2ab561e1
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2490&sid=dd8abed8b227a3bcf4945f7c2ab561e1