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 ('7c4caa4682a592f60b1d0b4910a6cbeb','0','18.218.234.83','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715343572','board.php?boardid=136&sid=3e0168afb52a2e7fb18cc3e4f16aa2aa','0','0','')
mysql error: Duplicate entry '7c4caa4682a592f60b1d0b4910a6cbeb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 14:19
Script: /board.php?boardid=136&sid=3e0168afb52a2e7fb18cc3e4f16aa2aa
Referer: