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 ('68dc9655cd00c18f8594eb0ab4b07c5f','0','3.12.120.202','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715385236','memberslist.php?sid=729a98d6fd992534b52f98fc3b28dbe7','0','0','')
mysql error: Duplicate entry '68dc9655cd00c18f8594eb0ab4b07c5f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 01:53
Script: /memberslist.php?sid=729a98d6fd992534b52f98fc3b28dbe7
Referer: http://wehrbauten.de/memberslist.php?sid=729a98d6fd992534b52f98fc3b28dbe7