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 ('9babf65efef6832bb24c4298be0b74be','0','3.135.209.44','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715756956','register.php?sid=619c3c25b7d2326c19536adebb9a711d','0','0','')
mysql error: Duplicate entry '9babf65efef6832bb24c4298be0b74be' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 09:09
Script: /register.php?sid=619c3c25b7d2326c19536adebb9a711d
Referer: