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 ('cfe8ae6b8da831e23dd99f8270ff3a0b','0','3.17.23.130','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714982319','misc.php?action=imprint&sid=a1b3f29c2a11ce21a0022b4427de5cb5','0','0','')
mysql error: Duplicate entry 'cfe8ae6b8da831e23dd99f8270ff3a0b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 06.05.2024 @ 09:58
Script: /misc.php?action=imprint&sid=a1b3f29c2a11ce21a0022b4427de5cb5
Referer: