SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('a5e6b9523531fe99bde4241219274d42','0','3.128.171.203','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716119081','about.php?sid=d47d227c835e32c1ef3ae7dde7134101','0','0','')
mysql error: Duplicate entry 'a5e6b9523531fe99bde4241219274d42' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 19.05.2024 @ 13:44
Script: /about.php?sid=d47d227c835e32c1ef3ae7dde7134101
Referer: