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 ('a5e836ee3f3fdb8cf9a3ff8fc9401fcd','0','3.14.130.241','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715957043','board.php?boardid=137&sid=c76d3d25f45549acd010668b8d74d1c2','0','0','')
mysql error: Duplicate entry 'a5e836ee3f3fdb8cf9a3ff8fc9401fcd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 16:44
Script: /board.php?boardid=137&sid=c76d3d25f45549acd010668b8d74d1c2
Referer: