Take the tour ×  This is my application on facebook page.
https://www.facebook.com/SlcChallenge/app_439780382750381 Here
my problem is that. Facebook sends signed_request for some user
and does't returns from some user. So when facebook doesn't send
signed request my page gets error. my page tab url is
https://tippll.com/pagetab.php/  Please help me to find the
solution. Thanks in advance Krishna Karki  share|improve this
question add comment  1 Answer  up vote 1 down vote accepted  If
on canvas load you receive a code instead of a signed_request,
this means that Facebook could not authenticate the user (and
retrieve an access_token, and has fallen back to sending a code
for you to exchange for an access_token.  Double-check your
canvas URL settings in your facebook application. This can
sometimes happen if you have URL rewriting non-SSL requests
through to SSL domains (or even just url rewrites in general).
share|improve this answer yea i have url rewriting on my
htaccess. now what should i do to solve this