Friends list bug out

Basically i had suspected botter in my friends list which apparently were banned/removed, so hes name in my friend list now is "Unknown". I cant delete him. My friends list now is totally ruined in bugs. Some friends not showing up, some onliners are at bottom, LUA errors, etc. Iv'e tried so far reset interface settings, clearing cache, overlapping friend list with addon based list. Need some tech advice, at least info where this file is located.

Message: Interface\FrameXML\UnitPopup.lua:1218: Usage: RemoveFriend(["name"] or [index])
Time: 01/16/17 04:52:18
Count: 1
Stack: [C]: ?
[C]: in function `RemoveFriend'
Interface\FrameXML\UnitPopup.lua:1218: in function `func'
Interface\FrameXML\UIDropDownMenu.lua:583: in function `UIDropDownMenuButton_OnClick'
[string "*:OnClick"]:1: in function <[string "*:OnClick"]:1>

Locals:

follow these steps:
1. Log-in in game
2. Open friend list
3. Now move to "Who" list and press "Refresh"
4. Now go back to friend list
5. CLOSE friend list
6. use this macro (be sure friend list is CLOSED):

Code:

---

/script for i=GetNumFriends(),1,-1 do name, level, class, area, connected, status, note = GetFriendInfo(i); if not name then RemoveFriend(i) end end

---

7. Now Log-out

Now your problem should be solved

worked like a charm, thanks a lot.