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 ('a55efa9042fbf15d1981314f30ee9899','0','3.135.219.78','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715559580','addreply.php?postid=1074&sid=224822f219742e35d2e52839d3dc5703','0','0','')
mysql error: Duplicate entry 'a55efa9042fbf15d1981314f30ee9899' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 02:19
Script: /addreply.php?postid=1074&sid=224822f219742e35d2e52839d3dc5703
Referer: http://wehrbauten.de/addreply.php?postid=1074&sid=224822f219742e35d2e52839d3dc5703