SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6.pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('a1701d1466b06def9e81bd04fad5c5b6','0','18.188.40.207','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715281050','jgs_portal.php?sid=a2ef66ef9748ee65ad57989307201b91','0','0','')
mysql error: Duplicate entry 'a1701d1466b06def9e81bd04fad5c5b6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.41
php version: 5.3.29
Date: 09.05.2024 @ 20:57
Script: /wbb2/jgs_portal.php?sid=a2ef66ef9748ee65ad57989307201b91
Referer: