removing whitespace

I am trying to check for whitespace, based on an error message I am getting, and I don’t know what to look for.
Is there an example somewhere? Here is my file:
<?php
/** WordPress’s config file **/
/** https://www.ads-software.com/ **/
// ** MySQL settings ** //
define(‘DB_NAME’, ‘amorales’); // The name of the database
define(‘DB_USER’, ‘amorales’); // Your MySQL username
define(‘DB_PASSWORD’, ‘****’); // …and password
define(‘DB_HOST’, ‘mysql5.secureserver.net’); // 99% chance you won’t need to change this value
// Change the prefix if you want to have multiple blogs in a single database.
$table_prefix = ‘wp_’; // example: ‘wp_’ or ‘b2’ or ‘mylogin_’
// Change this to localize WordPress. A corresponding MO file for the
// chosen language must be installed to wp-includes/languages.
// For example, install de.mo to wp-includes/languages and set WPLANG to ‘de’
// to enable German language support.
define (‘WPLANG’, ”);
/* Stop editing */
$server = DB_HOST;
$loginsql = DB_USER;
$passsql = DB_PASSWORD;
$base = DB_NAME;
define(‘ABSPATH’, dirname(__FILE__).’/’);
// Get everything else
require_once(ABSPATH.’wp-settings.php’);
?>
I am almost on the verge of getting this fixed, I think… Thanks in advance!!!!
AM