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 ('73fcfe6e9f075a5f1fbd51e5700ecb8c','0','18.118.1.158','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714923290','index.php?sid=f5d1e6c127fb7485efdf96484bc10346','0','0','')
mysql error: Duplicate entry '73fcfe6e9f075a5f1fbd51e5700ecb8c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 17:34
Script: /index.php?sid=f5d1e6c127fb7485efdf96484bc10346
Referer: