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 ('0156fe82382a755bf59226b5fbd38714','0','3.23.101.60','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715151793','jgs_portal_box.php?id=39&sid=e83a9cd19d3d1078ae087694e2ade23d','0','0','')
mysql error: Duplicate entry '0156fe82382a755bf59226b5fbd38714' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.1.41-3ubuntu12.3
php version: 4.4.9
Date: 08.05.2024 @ 09:03
Script: /wbb2/jgs_portal_box.php?id=39&sid=e83a9cd19d3d1078ae087694e2ade23d
Referer: