WordPress plugin : Following is not enabled

I have a problem with facebook extension on WordPress.
I have a red message on my website :

Erreur and when i click on : Following is not enabled for  https://www.facebook.com/Doccc.

When i check source :

<a class="pluginErrorLink" href="/plugins/error/api?code=100&amp;message=Following+is+not+enabled+for+https%3A%2F%2Fwww.facebook.com%2FDoccc.&amp;hash=AQBKvSIFcfJ0KB6H" target="_blank"><span class="fwb">Erreur</span></a>

My basic setting : http://hpics.li/172e2a2

Thank you for your help