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 ('252b2a7849c8bde656bbb12c3961cf38','0','18.116.85.72','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715488207','board.php?boardid=142&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=460a6e39470b1bf3986b8437446d0469','0','0','')
mysql error: Duplicate entry '252b2a7849c8bde656bbb12c3961cf38' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 06:30
Script: /board.php?boardid=142&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=460a6e39470b1bf3986b8437446d0469
Referer: