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 ('ac2c72c54202dfe6935fb23a089e0034','0','3.15.219.217','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715155621','thread.php?threadid=1407&sid=99747933f8a52a6cc5ee3cd465c987b9','0','0','')
mysql error: Duplicate entry 'ac2c72c54202dfe6935fb23a089e0034' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 10:07
Script: /thread.php?threadid=1407&sid=99747933f8a52a6cc5ee3cd465c987b9
Referer: