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 ('86dcf50bc27118537599a50a1249a39b','0','3.12.111.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715635785','print.php?threadid=1923&page=1&sid=4063bad5a26dacec12f0dd94f7d96502','0','0','')
mysql error: Duplicate entry '86dcf50bc27118537599a50a1249a39b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 23:29
Script: /print.php?threadid=1923&page=1&sid=4063bad5a26dacec12f0dd94f7d96502
Referer: http://wehrbauten.de/print.php?threadid=1923&page=1&sid=4063bad5a26dacec12f0dd94f7d96502