drupalchat flag friend integration

Hi guys when i tick the box flag friend module integration with drupalchat the following message appears and wont let me change anything on the whole page, it crashes

PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'friend_uid' in 'where clause': SELECT * FROM {flag_friend} WHERE uid = :uid OR friend_uid = :uid; Array ( [:uid] => 1 [:friend_uid] => 1 ) in _drupalchat_buddylist() (line 931 of D:\xampp\htdocs\sites\all\modules\drupalchat\drupalchat.module).

Please help :( always happens ( flag version 7.x-3.5, flag friend 7.x-2.0-alpha1, drupalchat 7.x-1.4)