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 ('9d73746cd8b14524aadd5dd2da1100bf','0','3.141.8.247','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714407618','board.php?boardid=240&sid=4c827898babf80287e56ac1b78d6f41b','0','0','')
mysql error: Duplicate entry '9d73746cd8b14524aadd5dd2da1100bf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 29.04.2024 @ 18:20
Script: /board.php?boardid=240&sid=4c827898babf80287e56ac1b78d6f41b
Referer: http://wehrbauten.de/board.php?boardid=240&sid=4c827898babf80287e56ac1b78d6f41b