An uncaught Exception was encountered

Type: Facebook\Exceptions\FacebookSDKException

Message: Required "app_id" key not supplied in config and could not find fallback environment variable "FACEBOOK_APP_ID"

Filename: /home/hitecheo/public_html/updates/application/vendor/facebook/php-sdk-v4/src/Facebook/Facebook.php

Line Number: 139

Backtrace:

File: /home/hitecheo/public_html/updates/application/libraries/Facebook.php
Line: 71
Function: __construct

File: /home/hitecheo/public_html/updates/application/controllers/Subscription.php
Line: 11
Function: library

File: /home/hitecheo/public_html/updates/index.php
Line: 316
Function: require_once