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 ('26307e2b15342fc260ec898adb4071b1','0','3.129.210.17','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714959746','board.php?boardid=590&sid=3c22a3d9b557945cd2728be3ce3c4bf6','0','0','')
mysql error: Duplicate entry '26307e2b15342fc260ec898adb4071b1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 03:42
Script: /board.php?boardid=590&sid=3c22a3d9b557945cd2728be3ce3c4bf6
Referer: