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 ('fd11d3e399fcf6a54adc0439d9947560','0','18.119.131.72','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715121725','login.php?sid=a1e95dfee27d134a63402d751e61f64f','0','0','')
mysql error: Duplicate entry 'fd11d3e399fcf6a54adc0439d9947560' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 00:42
Script: /login.php?sid=a1e95dfee27d134a63402d751e61f64f
Referer: http://wehrbauten.de/login.php?sid=a1e95dfee27d134a63402d751e61f64f