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 ('765f777c768acbf0c90d348136625fe9','0','18.218.145.131','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715813726','misc.php?action=imprint&sid=7defc407fcfea37ad8332a8847abff8f','0','0','')
mysql error: Duplicate entry '765f777c768acbf0c90d348136625fe9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 00:55
Script: /misc.php?action=imprint&sid=7defc407fcfea37ad8332a8847abff8f
Referer: http://wehrbauten.de/misc.php?action=imprint&sid=7defc407fcfea37ad8332a8847abff8f