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 ('5856eaaf5ff8cde97a2ce8607c222bd9','0','13.58.247.231','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715778494','thread.php?threadid=7912&threadview=0&hilight=&hilightuser=0&sid=a4f75241300869c01d4dc4cdd3c93ee7','0','0','')
mysql error: Duplicate entry '5856eaaf5ff8cde97a2ce8607c222bd9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 15:08
Script: /thread.php?threadid=7912&threadview=0&hilight=&hilightuser=0&sid=a4f75241300869c01d4dc4cdd3c93ee7
Referer: