Original or old Facebook photo link that you used on your Website or blog that no longer works because Facebook keeps changing their CDN and image servers:
New link to that old image:
Original Facebook image URI: https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/251959_10150994404484776_172973847_n.jpg
New Facebook image URI (as of March 2016): https://scontent-mrs1-1.xx.fbcdn.net/hphotos-xpa1/v/t1.0-9/251959_10150994404484776_172973847_n.jpg?oh=9be182a1c481d21242f9ca279276ec11&oe=5784232F
We see that main domains of Facebook server containing pictures previously was akamaihd.net and now it’s fbcdn.net – things are obviously. Try your luck manipulating image or photo URIs.