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 ('97ef6a8bbff6b339e0d0bc8f1f6b7895','0','3.144.81.84','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716873904','misc.php?action=imprint&sid=52b9749eb8e3644cda53c86c1fe579eb','0','0','')
mysql error: Duplicate entry '97ef6a8bbff6b339e0d0bc8f1f6b7895' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 28.05.2024 @ 07:25
Script: /misc.php?action=imprint&sid=52b9749eb8e3644cda53c86c1fe579eb
Referer: