Carbon fields undefined core.min.js not visible carbon fields in admin area.

functions.php

<?php
// probably there is a problem with directory to carbonfield plugin. 
// As it is shown under this url https://github.com/htmlburger/carbon-fields/issues/457
// this problem appears when plugin is in symlinked directory.
// add below line to function.php
define('Carbon_Fields\URL', WP_PLUGIN_URL. '/carbon-fields/vendor/htmlburger/carbon-fields');