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 ('d3c6aa2c1fc5e24262382ffe4c54129c','0','3.145.74.54','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714686182','board.php?boardid=3&sid=aa4a9fa293a48fc19c103efa1d4bbb3f','0','0','')
mysql error: Duplicate entry 'd3c6aa2c1fc5e24262382ffe4c54129c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 02.05.2024 @ 23:43
Script: /board.php?boardid=3&sid=aa4a9fa293a48fc19c103efa1d4bbb3f
Referer: