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 ('b26e8cac825ce92accfb9b875903bd3e','0','18.224.37.68','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715321166','thread.php?threadid=2497&threadview=0&hilight=&hilightuser=0&sid=a7099d4fa40e969e1bf8dbdb298c2aa2','0','0','')
mysql error: Duplicate entry 'b26e8cac825ce92accfb9b875903bd3e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 08:06
Script: /thread.php?threadid=2497&threadview=0&hilight=&hilightuser=0&sid=a7099d4fa40e969e1bf8dbdb298c2aa2
Referer: