I have attempted with the below but it crashed the system.
<?php
wp_register_script( 'support', 'js/big-support.js', );
wp_enqueue_script( 'support' );
/* */
?>
Firstly, enable debugging when developing in WordPress.
// wp-config.php
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_DISPLAY', true);
That will help you find the cause of errors.
Probably this line is the problem. older versions of php do not allow for trailing ,'s in function calls
wp_register_script( 'support', 'js/big-support.js', );
// ^ remove comma
Secondly, you should use the wp_enqueue_scripts hook when registering scripts like so:
add_action('wp_enqueue_scripts', 'SO_53028038_register_scripts');
function SO_53028038_register_scripts(){
wp_enqueue_script('support', get_stylesheet_directory_uri() . '/js/big-support.js';
}