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 ('98c2a92bb35af6ad738b2c52a231a6d8','0','3.145.163.58','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715294922','calendar.php?sid=0de5832f191aec641cc8cfda04c37935','0','0','')
mysql error: Duplicate entry '98c2a92bb35af6ad738b2c52a231a6d8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 00:48
Script: /calendar.php?sid=0de5832f191aec641cc8cfda04c37935
Referer: http://wehrbauten.de/calendar.php?sid=0de5832f191aec641cc8cfda04c37935