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 ('55841a35f546dec4e870b13c5429e6e1','0','18.119.139.50','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714309809','thread.php?threadid=2491&sid=b7745e7475aaefbd24891bcaf7372a41','0','0','')
mysql error: Duplicate entry '55841a35f546dec4e870b13c5429e6e1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 28.04.2024 @ 15:10
Script: /thread.php?threadid=2491&sid=b7745e7475aaefbd24891bcaf7372a41
Referer: http://wehrbauten.de/thread.php?threadid=2491&sid=b7745e7475aaefbd24891bcaf7372a41