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 ('5c83c26160f8ce78709d89acc317dd31','0','3.137.218.230','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715023707','board.php?boardid=96&sid=1cee1b29ab6187dfe59dcc24a2de5a15','0','0','')
mysql error: Duplicate entry '5c83c26160f8ce78709d89acc317dd31' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 21:28
Script: /board.php?boardid=96&sid=1cee1b29ab6187dfe59dcc24a2de5a15
Referer: http://wehrbauten.de/board.php?boardid=96&sid=1cee1b29ab6187dfe59dcc24a2de5a15