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 ('ed26a4fed424c56b9c09fa90c7a5bd25','0','18.191.180.252','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715670899','board.php?boardid=208&sid=45a3f6a5dee285686c625cf56bd53a4f','0','0','')
mysql error: Duplicate entry 'ed26a4fed424c56b9c09fa90c7a5bd25' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 09:14
Script: /board.php?boardid=208&sid=45a3f6a5dee285686c625cf56bd53a4f
Referer: http://wehrbauten.de/board.php?boardid=208&sid=45a3f6a5dee285686c625cf56bd53a4f