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 ('4ddeb8c9680adcab7a16052613ff99eb','0','3.17.156.179','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715706524','board.php?boardid=213&sid=45eab282d5ad2948120576a1eb503633','0','0','')
mysql error: Duplicate entry '4ddeb8c9680adcab7a16052613ff99eb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 19:08
Script: /board.php?boardid=213&sid=45eab282d5ad2948120576a1eb503633
Referer: http://wehrbauten.de/board.php?boardid=213&sid=45eab282d5ad2948120576a1eb503633