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 ('494ff8252c7953bb300488319af860f4','0','3.128.94.171','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715044650','calendar.php?sid=50b2242669d7a4a0a1ddd58a42447071','0','0','')
mysql error: Duplicate entry '494ff8252c7953bb300488319af860f4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 03:17
Script: /calendar.php?sid=50b2242669d7a4a0a1ddd58a42447071
Referer: