<p>We had to move to a newer version of Facebook API, because the API version that we used previously is no longer supported. However, to work with the new API, [product] requires PHP 5.4. You are seeing this message because your server has an older PHP version.</p><p>The status of the <b>Facebook</b> provider under <b>Website → Social login</b> has been set to <i>Disabled</i>.</p><p>Please update your PHP version to 5.4 or higher before you re-enable Facebook.</p>