SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('c5086d75e374af3d039a1ae42a972363','0','216.73.216.58','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1749449236','thread.php?postid=31996','0','0','')
mysql error: Duplicate entry 'c5086d75e374af3d039a1ae42a972363' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 09.06.2025 @ 08:07
Script: /thread.php?postid=31996
Referer: