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 ('d877f0f142ddf01e5343e50e87d8c656','0','3.144.84.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714746260','board.php?boardid=335&sid=1f77dc951c14600c46bf5cc4b7279372','0','0','')
mysql error: Duplicate entry 'd877f0f142ddf01e5343e50e87d8c656' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 16:24
Script: /board.php?boardid=335&sid=1f77dc951c14600c46bf5cc4b7279372
Referer: http://wehrbauten.de/board.php?boardid=335&sid=1f77dc951c14600c46bf5cc4b7279372