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 ('7a9fd090f48b95846f78833497edb47c','0','18.224.45.217','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715793514','thread.php?threadid=7898&threadview=0&hilight=&hilightuser=0&sid=618ffb37722fa00e1290a6f7dafc7baf','0','0','')
mysql error: Duplicate entry '7a9fd090f48b95846f78833497edb47c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 19:18
Script: /thread.php?threadid=7898&threadview=0&hilight=&hilightuser=0&sid=618ffb37722fa00e1290a6f7dafc7baf
Referer: