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 ('b20252ee6813c08dddfe34af59d0f8b0','0','3.139.90.0','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1742586902','ct_mail.php?Page=941921069','0','0','')
mysql error: Duplicate entry 'b20252ee6813c08dddfe34af59d0f8b0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 21.03.2025 @ 20:55
Script: /ct_mail.php?Page=941921069
Referer: