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 ('4048a416be2758f4487b15499dec941f','0','3.14.84.90','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715628919','markread.php?boardid=698&sid=88bdf6e25b9479932204545d30263e05','0','0','')
mysql error: Duplicate entry '4048a416be2758f4487b15499dec941f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 21:35
Script: /markread.php?boardid=698&sid=88bdf6e25b9479932204545d30263e05
Referer: