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 ('ef9919f40ab31c75cfada9b46ca196df','0','18.116.19.17','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715424803','thread.php?goto=lastpost&threadid=664&sid=13d124b2fa2db8e84bfcc2424d4edb26','0','0','')
mysql error: Duplicate entry 'ef9919f40ab31c75cfada9b46ca196df' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 12:53
Script: /thread.php?goto=lastpost&threadid=664&sid=13d124b2fa2db8e84bfcc2424d4edb26
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=664&sid=13d124b2fa2db8e84bfcc2424d4edb26