Avatar not showing in blog directory


As you can see, all of the blogs on the list have avatars what are uploaded. But the default is shown twice and the other one is black. But when I look in the users backend options you can see the avatar.

Permissions are set right and I uploaded the .htaccess file

This is how its called out in the blogs-directory plugin file, is this correct?
>' . get_blog_avatar($blog['blog_id'], 96, $avatar_default) . '</center></td>