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 ('9efc80c56bfa1efd6b2fed60006a7061','0','3.19.56.45','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715050605','board.php?boardid=738&sid=b809f202dcc06162f80830fcfbb48230','0','0','')
mysql error: Duplicate entry '9efc80c56bfa1efd6b2fed60006a7061' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 04:56
Script: /board.php?boardid=738&sid=b809f202dcc06162f80830fcfbb48230
Referer: