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 ('021bcc64aeace9230d34d97c867b5f36','0','18.117.186.92','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714570101','addreply.php?postid=79404&sid=00414e2a5e083a3cfcb5e2534b278c1f','0','0','')
mysql error: Duplicate entry '021bcc64aeace9230d34d97c867b5f36' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 01.05.2024 @ 15:28
Script: /addreply.php?postid=79404&sid=00414e2a5e083a3cfcb5e2534b278c1f
Referer: