[Theme: Zerif lite] Safari facebook app problem

Hello i have little trouble of my website. I went through a link on my facebook app on iphone using safari browser. I get a message :

http://s14.postimg.org/nmiukoes1/unnamed.jpg

When i click “Cancle” button everything is ok , the webiste working fine in facebook app. But when i click “Open app” button i get this message by safari:

http://s2.postimg.org/5uhdqzkqx/unnamed_1.jpg

Where is the problem ? Please help. Thank you 🙂