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 ('01bcaf3df310f7d6093ab684037e0f88','0','18.191.200.35','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716157512','calendar.php?sid=36ee88bc29ff2ecbf43e6fe33cc30c0e','0','0','')
mysql error: Duplicate entry '01bcaf3df310f7d6093ab684037e0f88' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 20.05.2024 @ 00:25
Script: /board/calendar.php?sid=36ee88bc29ff2ecbf43e6fe33cc30c0e
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