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 ('2db21be7909e4f4f7dee12470290356d','0','3.144.252.140','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715072705','thread.php?threadid=867&sid=3a74427294e53f46906de8d2bc865da6','0','0','')
mysql error: Duplicate entry '2db21be7909e4f4f7dee12470290356d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 11:05
Script: /thread.php?threadid=867&sid=3a74427294e53f46906de8d2bc865da6
Referer: