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 ('bf36c405df8ed4ad2650cbbf7c577155','0','3.15.27.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714960413','board.php?boardid=93&sid=00508d7c424b655b81696e0dc85b2e6b','0','0','')
mysql error: Duplicate entry 'bf36c405df8ed4ad2650cbbf7c577155' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 03:53
Script: /board.php?boardid=93&sid=00508d7c424b655b81696e0dc85b2e6b
Referer: