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 ('91898d73f5fa98973d7a60783b03633f','0','18.219.86.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715328951','jgs_galerie.php?sid=2c982ee1dc5c362bd3c26fbf30e56af0','0','0','')
mysql error: Duplicate entry '91898d73f5fa98973d7a60783b03633f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 10:15
Script: /jgs_galerie.php?sid=2c982ee1dc5c362bd3c26fbf30e56af0
Referer: http://wehrbauten.de/jgs_galerie.php?sid=2c982ee1dc5c362bd3c26fbf30e56af0