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 ('46a78c9e5cb12ecd4290864b2e502073','0','18.119.131.72','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1713977713','board.php?boardid=120&sid=d70d1ede0a7d77ba642c1dcc8794be41','0','0','')
mysql error: Duplicate entry '46a78c9e5cb12ecd4290864b2e502073' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 24.04.2024 @ 18:55
Script: /board.php?boardid=120&sid=d70d1ede0a7d77ba642c1dcc8794be41
Referer: http://wehrbauten.de/board.php?boardid=120&sid=d70d1ede0a7d77ba642c1dcc8794be41