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 ('d7a70d8d10134d6ca1f099f0a503b12e','0','13.58.39.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715326824','board.php?boardid=689&sid=79d5a931b6f006686873ab7135418d41','0','0','')
mysql error: Duplicate entry 'd7a70d8d10134d6ca1f099f0a503b12e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 09:40
Script: /board.php?boardid=689&sid=79d5a931b6f006686873ab7135418d41
Referer: http://wehrbauten.de/board.php?boardid=689&sid=79d5a931b6f006686873ab7135418d41