SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_security_blocked (ip, grund, time, ignore_block, timeout) VALUES ('54.224.220.72','temporäre Sperre','1534539039','0','1534549839')
mysql error: Duplicate entry '65535' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.1.73-1
php version: 5.3.3-7+squeeze19
Date: 17.08.2018 @ 22:50
Script: /karpfen/profile.php?userid=237&sid=3f38b1c557f266e4301c7304500d25f5
Referer: