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 ('2023d8939cf96b911bd6e7690c83b4a6','0','3.137.164.241','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715581037','board.php?boardid=560&sid=eb53c8dabce3fdc2e2c04b795fb17817','0','0','')
mysql error: Duplicate entry '2023d8939cf96b911bd6e7690c83b4a6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 08:17
Script: /board.php?boardid=560&sid=eb53c8dabce3fdc2e2c04b795fb17817
Referer: http://wehrbauten.de/board.php?boardid=560&sid=eb53c8dabce3fdc2e2c04b795fb17817