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 ('4bd6f545ac32e575860c8c97b5582fb2','0','3.144.205.223','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715056749','calendar.php?month=3&year=2024&sid=cf14a293ed07e21ac83d6860236e9885','0','0','')
mysql error: Duplicate entry '4bd6f545ac32e575860c8c97b5582fb2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 06:39
Script: /calendar.php?month=3&year=2024&sid=cf14a293ed07e21ac83d6860236e9885
Referer: