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 ('53a041c0976944bd99f9239e2a4f8924','0','3.16.41.142','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716324543','misc.php?action=imprint&sid=99a970ca3e0e9388f8d65fd6a00b4b08','0','0','')
mysql error: Duplicate entry '53a041c0976944bd99f9239e2a4f8924' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 21.05.2024 @ 22:49
Script: /misc.php?action=imprint&sid=99a970ca3e0e9388f8d65fd6a00b4b08
Referer: