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 ('1b306477de22796b9a4c407725fb750f','0','3.12.161.77','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714673732','board.php?boardid=159&sid=2fbf20862e71e5816e7fdb07b1f0614f','0','0','')
mysql error: Duplicate entry '1b306477de22796b9a4c407725fb750f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 20:15
Script: /board.php?boardid=159&sid=2fbf20862e71e5816e7fdb07b1f0614f
Referer: