Facebook API Question posted in
The official documentation for the Facebook APIs can be found here.

Facebook Login : Error validating verification code

As of today an application that i have keeps getting the following error while using Facebook Login Api.

Error validating verification code. Please make sure your redirect_uri is identical to the one you used in the OAuth dialog
request

Last successfull attempt was yesterday night 2018-08-29 23:40:00 and since then all loging attempts end up to redirect_url mismatch.

My call back url is like

https://mysubdomain.mysite.gr/index.php?r=site/callbackfb

also tried alternative

https://mysubdomain.mysite.gr/index.php/site/callbackfb

but still no success.
No change was made to the application and nothing seems to justify the exception. Tried also with latest sdk librady, but i still get the same error.

Any help would be much appreciated.

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4

Answers


  1. Chosen as BEST ANSWER
    0

    Facebook seems to have "short of" break its own code. By enabling enfore https, the Validate OAuth url no longer validates.

    I have added the following param on my redirect url to bypass the issue

    https://mysubdomain.mysite.gr/index.php?r=site/callbackfb&enforce_https=1


  2. 0

    i am facing same issue today here is solution please check below link :.

    Facebook PHP SDK – Login helper returns error

    I’m currently working on Graph api version v2.2

    If you open Enforce HTTPS on in Facebook Login settings.

    Go to you facebook-php-sdk and inside that

    FacebookHelpersFacebookRedirectLoginHelper.php

    change $redirectUrl: 

    $redirectUrl = FacebookUrlManipulator::removeParamsFromUrl($redirectUrl, ['state','code']);

    To

    $redirectUrl = FacebookUrlManipulator::removeParamsFromUrl($redirectUrl, ['state','code','enforce_https']);
    Login or Signup to reply.
  3. 0

    It is a bug from Facebook that started today.

    Go to Facebook Developers.
    Choose your app.
    Go to Facebook Login > Settings
    Then uncheck ENFORCE HTTPS

    It worked for me 🙂

    Login or Signup to reply.
  4. 0

    Log into developers.facebook.com and make sure you’re using the redirect_uri set on your app.

    Failing that, as absurd as this sounds, verify you’re using the correct app_secret.

    Facebook will give you this instead of just saying “invalid secret” in the response

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