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 ('4636915a139b63dede9c565206d79936','0','3.142.98.108','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714942967','board.php?boardid=114&sid=a46d936f1550fd58350e76f1932c9346','0','0','')
mysql error: Duplicate entry '4636915a139b63dede9c565206d79936' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 23:02
Script: /board.php?boardid=114&sid=a46d936f1550fd58350e76f1932c9346
Referer: