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 ('73f43fc380a03e611f7d54e96dd8be2d','0','18.224.0.25','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714748985','search.php?sid=998f4412a37c8397a76dccb6f641f4f7','0','0','')
mysql error: Duplicate entry '73f43fc380a03e611f7d54e96dd8be2d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 17:09
Script: /search.php?sid=998f4412a37c8397a76dccb6f641f4f7
Referer: http://wehrbauten.de/search.php?sid=998f4412a37c8397a76dccb6f641f4f7