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 ('a7b33cd7cf2d05a1c3c7a33d108a0669','0','3.129.247.196','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715124699','thread.php?goto=lastpost&threadid=2142&sid=3f6b1cd8a52d200d56276870181c7fba','0','0','')
mysql error: Duplicate entry 'a7b33cd7cf2d05a1c3c7a33d108a0669' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 01:31
Script: /thread.php?goto=lastpost&threadid=2142&sid=3f6b1cd8a52d200d56276870181c7fba
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2142&sid=3f6b1cd8a52d200d56276870181c7fba