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 ('acbcda9710fcb2c8083395de7ad58c6f','0','3.143.9.115','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714185696','board.php?boardid=78&sid=ae9636231ffb497b3099012616bb561a','0','0','')
mysql error: Duplicate entry 'acbcda9710fcb2c8083395de7ad58c6f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 27.04.2024 @ 04:41
Script: /board.php?boardid=78&sid=ae9636231ffb497b3099012616bb561a
Referer: