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 ('da1b19df5ff891b5c9f1f60b9c8906ee','0','18.189.22.55','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716387722','calendar.php?sid=0ff6060703fcd247b65d341f942a20f3','0','0','')
mysql error: Duplicate entry 'da1b19df5ff891b5c9f1f60b9c8906ee' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.05.2024 @ 16:22
Script: /calendar.php?sid=0ff6060703fcd247b65d341f942a20f3
Referer: