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 ('b73c4e78de79e53e92d2c61ff8658ba6','0','3.15.143.181','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714927026','profile.php?userid=30880&sid=45dd67e5c1289b3c6a4dcaadfa6d851c','0','0','')
mysql error: Duplicate entry 'b73c4e78de79e53e92d2c61ff8658ba6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.1.41-3ubuntu12.3
php version: 4.4.9
Date: 05.05.2024 @ 18:37
Script: /wbb2/profile.php?userid=30880&sid=45dd67e5c1289b3c6a4dcaadfa6d851c
Referer: