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 ('caa39e663a6c24d469ca9fe6a6069487','0','18.218.55.14','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715317411','usercp.php?action=addsubscription&boardid=155&sid=c3295e61e56fe71b0f874b4a0df97cef','0','0','')
mysql error: Duplicate entry 'caa39e663a6c24d469ca9fe6a6069487' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 07:03
Script: /usercp.php?action=addsubscription&boardid=155&sid=c3295e61e56fe71b0f874b4a0df97cef
Referer: