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 ('aaffe77f533602f2e26d5b702322df87','0','18.218.196.182','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715331785','board.php?boardid=328&sid=4159606b9f406250711c70129726ca7e','0','0','')
mysql error: Duplicate entry 'aaffe77f533602f2e26d5b702322df87' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 11:03
Script: /board.php?boardid=328&sid=4159606b9f406250711c70129726ca7e
Referer: http://wehrbauten.de/board.php?boardid=328&sid=4159606b9f406250711c70129726ca7e