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 ('c37716163f53b7fb6173c26c535d9882','0','3.21.244.137','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715838154','formmail.php?userid=703&sid=92bcbc90d26c4a2704aca2beeaa67928','0','0','')
mysql error: Duplicate entry 'c37716163f53b7fb6173c26c535d9882' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 07:42
Script: /formmail.php?userid=703&sid=92bcbc90d26c4a2704aca2beeaa67928
Referer: