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 ('757e3271d539b59783ae6b3f08994401','0','18.219.48.116','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716210873','calendar.php?sid=726d586fb49b275977004e8ab8f448fd','0','0','')
mysql error: Duplicate entry '757e3271d539b59783ae6b3f08994401' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 20.05.2024 @ 15:14
Script: /board/calendar.php?sid=726d586fb49b275977004e8ab8f448fd
Referer: