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 ('ad0c16f234b83243bc766b7f2215e9fd','0','18.218.156.35','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715207721','jgs_portal_links.php?action=suche2_starten&buchstabe=Y&sid=0d20a2f4974cca739773970c89115313','0','0','')
mysql error: Duplicate entry 'ad0c16f234b83243bc766b7f2215e9fd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 00:35
Script: /jgs_portal_links.php?action=suche2_starten&buchstabe=Y&sid=0d20a2f4974cca739773970c89115313
Referer: http://wehrbauten.de/jgs_portal_links.php?action=suche2_starten&buchstabe=Y&sid=0d20a2f4974cca739773970c89115313