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 ('6990edd752a170738af6e84ce8450c18','0','18.217.228.35','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715143825','thread.php?goto=lastpost&threadid=960&sid=1ba6029b95f000a1e3e25b619e57df44','0','0','')
mysql error: Duplicate entry '6990edd752a170738af6e84ce8450c18' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 06:50
Script: /thread.php?goto=lastpost&threadid=960&sid=1ba6029b95f000a1e3e25b619e57df44
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=960&sid=1ba6029b95f000a1e3e25b619e57df44