I am trying to integrate a simple URL Share on my App, following the dedicated Facebook tutorial (link)
On my app, I simply click on a button, which displays a dialo
If none of the other answers fixed this problem for you, one last thing to check is the Bundle ID in your Facebook App settings.
I had this problem for my iOS app that was using a different bundle identifier depending on the build configuration I used.
You can specify several Bundle IDs in your Facebook App settings.