but when i use it, it shows no picture of the player
sorry for the big bump but wanted to reply as it might be usefull for others.
A thing i'm thinking of is that you didn't assign a picture in the view "teamplayer" and as a result it will show the placeholder.
With view teamplayer i meant the following:
project -> Teams -> Manage Team personal (column) -> edit player
(It won't show the picture assigned within persons view)
// but maybe i'm totally wrong there.