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 ('4a5b3e00c17d456c2b042665ebf097fb','0','216.73.216.94','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1751803596','thread.php?page=4&threadid=2407','0','0','')
mysql error: Duplicate entry '4a5b3e00c17d456c2b042665ebf097fb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 06.07.2025 @ 14:06
Script: /thread.php?page=4&threadid=2407
Referer: