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 ('a1b5f80ee50fcf9de7edb90e486205f0','0','127.0.0.1','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714350818','thread.php?threadid=90&goto=lastpost&sid=49cb953500e55739fbd47ad58a611ecb','0','0','')
mysql error: Duplicate entry 'a1b5f80ee50fcf9de7edb90e486205f0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-0ubuntu0.18.04.1
php version: 7.2.34-36+ubuntu18.04.1+deb.sury.org+1
Date: 29.04.2024 @ 02:33
Script: /forum/thread.php?threadid=90&goto=lastpost&sid=49cb953500e55739fbd47ad58a611ecb
Referer: