SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('f4b18b8dab156156f68cade5d5c0dae1','0','18.117.94.20','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716364034','thread.php?postid=284836&sid=e489e6e4d229d06681d28680915974f4','0','0','')
mysql error: Duplicate entry 'f4b18b8dab156156f68cade5d5c0dae1' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 22.05.2024 @ 03:47
Script: /wbb2/thread.php?postid=284836&sid=e489e6e4d229d06681d28680915974f4
Referer: