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 ('381f3ccaad46a0929daa972619708bb5','0','18.191.223.123','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715053654','addreply.php?postid=5545&sid=672b795fe0fbc713d276eba5c31d3459','0','0','')
mysql error: Duplicate entry '381f3ccaad46a0929daa972619708bb5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 05:47
Script: /addreply.php?postid=5545&sid=672b795fe0fbc713d276eba5c31d3459
Referer: http://wehrbauten.de/addreply.php?postid=5545&sid=672b795fe0fbc713d276eba5c31d3459