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 ('b7f1a8c2408b34f262aa203af792f256','0','3.137.210.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716387605','board.php?boardid=38&sid=4f54c0ece87898be16a48fafa0f87187','0','0','')
mysql error: Duplicate entry 'b7f1a8c2408b34f262aa203af792f256' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.05.2024 @ 16:20
Script: /board.php?boardid=38&sid=4f54c0ece87898be16a48fafa0f87187
Referer: