SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_user2awards (userid, awardid, autoawardid, beschreibung) VALUES ('11', '14', '11', 'Der beste Elfer Killer')
mysql error: Duplicate entry '11-14-11' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.21-nmm1-log
php version: 5.5.38-nmm3
Date: 14.11.2018 @ 01:14
Script: /wbb2/swf_game_play.php?game=Chomper&gameid=471
Referer: