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 ('8c2770caba38eb759a3428a946e83b49','0','3.140.185.147','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714910646','board.php?boardid=567&sid=44ab0c348dab40fe1ca1788b8c2c68d6','0','0','')
mysql error: Duplicate entry '8c2770caba38eb759a3428a946e83b49' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 14:04
Script: /board.php?boardid=567&sid=44ab0c348dab40fe1ca1788b8c2c68d6
Referer: http://wehrbauten.de/board.php?boardid=567&sid=44ab0c348dab40fe1ca1788b8c2c68d6