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 ('6d5ab162bafbed8a0ad972119224f8df','0','3.138.124.40','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715460133','board.php?boardid=728&sid=8495a2556428886a099dc4d142f79861','0','0','')
mysql error: Duplicate entry '6d5ab162bafbed8a0ad972119224f8df' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 22:42
Script: /board.php?boardid=728&sid=8495a2556428886a099dc4d142f79861
Referer: http://wehrbauten.de/board.php?boardid=728&sid=8495a2556428886a099dc4d142f79861