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 ('f4a1a2f4f585bfdff0452d3b7c9385ee','0','3.137.173.168','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715900975','index.php?sid=9ee4238847db324cd755ae4cc2432b83','0','0','')
mysql error: Duplicate entry 'f4a1a2f4f585bfdff0452d3b7c9385ee' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 01:09
Script: /index.php?sid=9ee4238847db324cd755ae4cc2432b83
Referer: