Missing FB ID problems

I just installed the plugin and when i click on login i am getting a FATAL EXCEPTION

Any help would be appreciated !

Thanks

Fatal error: Uncaught exception ‘Facebook\Exceptions\FacebookSDKException’ with message ‘Required “app_id” key not supplied in config and could not find fallback environment variable “FACEBOOK_APP_ID”‘ in wp-content/plugins/woosocio/facebook/Facebook.php:133

Stack trace:
#0 wp-content/plugins/woosocio/classes/class-woo-socio.php(749): Facebook\Facebook->__construct(Array)
#1 /wp-content/plugins/woosocio/woosocio.logins.php(8): Woo_Socio->ws_get_inst()
#2 /wp-content/plugins/woosocio/classes/class-woo-socio.php(669): include_once(”)
#3 [internal function]: Woo_Socio->socio_settings(”)
#4 /wp-includes/class-wp-hook.php(298): call_user_func_array(Array, Array)
#5 /wp-includes/class-wp-hook.php(323): WP_Hook->apply_filters(”, Array)
#6 /wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#7 /wp-a in /wp-content/plugins/woosocio/facebook/Facebook.php on line 133