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 ('20938fe303a96852f6fa403dd46bf97c','0','3.141.202.187','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714678064','thread.php?threadid=1193&sid=99d42db0b5d165143c4fc4e3070e5ccd','0','0','')
mysql error: Duplicate entry '20938fe303a96852f6fa403dd46bf97c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 21:27
Script: /thread.php?threadid=1193&sid=99d42db0b5d165143c4fc4e3070e5ccd
Referer: