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 ('341b2414d53868c5cbd7063ec43c047a','0','13.59.154.143','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715634400','formmail.php?userid=1&sid=3fd3affec1b6db0f9c6cc267dfc1a716','0','0','')
mysql error: Duplicate entry '341b2414d53868c5cbd7063ec43c047a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 23:06
Script: /formmail.php?userid=1&sid=3fd3affec1b6db0f9c6cc267dfc1a716
Referer: