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 ('13e5c2a96c628cee2d33c3a1fadbdc9c','0','3.138.204.208','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715155084','misc.php?action=imprint&sid=bac40e52ea43a92876418bad465c997a','0','0','')
mysql error: Duplicate entry '13e5c2a96c628cee2d33c3a1fadbdc9c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 08.05.2024 @ 09:58
Script: /misc.php?action=imprint&sid=bac40e52ea43a92876418bad465c997a
Referer: