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 ('5c6d8e6880b3d1ec1186995147b0707f','0','18.220.1.239','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715377073','board.php?boardid=106&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=a22e3097853cc393cb4a3a9496b04194','0','0','')
mysql error: Duplicate entry '5c6d8e6880b3d1ec1186995147b0707f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 23:37
Script: /board.php?boardid=106&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=a22e3097853cc393cb4a3a9496b04194
Referer: http://wehrbauten.de/board.php?boardid=106&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=a22e3097853cc393cb4a3a9496b04194