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 ('8e8e9e88bd2bbb218967c3a1f3992973','0','18.222.184.122','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716073742','search.php?sid=9d1fd2e067b9ae06cce6630a5b088c62','0','0','')
mysql error: Duplicate entry '8e8e9e88bd2bbb218967c3a1f3992973' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.2.17
Date: 19.05.2024 @ 01:09
Script: /search.php?sid=9d1fd2e067b9ae06cce6630a5b088c62
Referer: