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 ('78dab3790460b53ef7d1834f2ba85bf1','0','3.21.158.148','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714952822','index.php?sid=3b5ef91bad5a388bfd6f1067935d8fd6','0','0','')
mysql error: Duplicate entry '78dab3790460b53ef7d1834f2ba85bf1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 06.05.2024 @ 01:47
Script: /index.php?sid=3b5ef91bad5a388bfd6f1067935d8fd6
Referer: