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 ('900bdbb9ae4c1db32e25b961a23d90a0','0','3.17.155.88','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715790069','login.php?sid=a0144362f192fa9000cca1d1346a97e8','0','0','')
mysql error: Duplicate entry '900bdbb9ae4c1db32e25b961a23d90a0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 18:21
Script: /login.php?sid=a0144362f192fa9000cca1d1346a97e8
Referer: