PHP died

Hello, here is my wp-config contents:

<?php
/**
 * The base configurations of the WordPress.
 *
 * This file has the following configurations: MySQL settings, Table Prefix,
 * Secret Keys, and ABSPATH. You can find more information by visiting
 * {@link https://codex.wordpress.org/Editing_wp-config.php Editing wp-config.p$
 * Codex page. You can get the MySQL settings from your web host.
 *
 * This file is used by the wp-config.php creation script during the
 * installation. You don't have to use the web site, you can just copy this file
 * to "wp-config.php" and fill in the values.
 *
 * @package WordPress
 */

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress *
define('DB_NAME', 'wordpress');

/** MySQL database username */
define('DB_USER', 'username');

/** MySQL database password */
define('DB_PASSWORD', 'password');

/** MySQL hostname */
define('DB_HOST', 'hostname');

/** Database Charset to use in creating database tables. */
define('DB_CHARSET', 'utf8mb4');

/** The Database Collate type. Don't change this if in doubt. */
define('DB_COLLATE', '');

/**#@+
 * Authentication Unique Keys and Salts.
 *
 * Change these to different unique phrases!
 * You can generate these using the {@link https://api.wordpress.org/secret-key$
 * You can change these at any point in time to invalidate all existing cookies$
 *
 * @since 2.6.0
 */
define('AUTH_KEY',         'key0');
define('SECURE_AUTH_KEY',  'key1');
define('LOGGED_IN_KEY',    'key2');
define('NONCE_KEY',        'key3');
define('AUTH_SALT',        'key4');
define('SECURE_AUTH_SALT', 'key5');
define('LOGGED_IN_SALT',   'key6');
define('NONCE_SALT',       'key7');
/**#@-*/

/**
 * WordPress Database Table prefix.
 *
 * You can have multiple installations in one database if you give each a unique
 * prefix. Only numbers, letters, and underscores please!
 */
$table_prefix  = 'wp_';

/**
 * For developers: WordPress debugging mode.
 *
 * Change this to true to enable the display of notices during development.
 * It is strongly recommended that plugin and theme developers use WP_DEBUG
 * in their development environments.
 */
define('WP_DEBUG', true);

/* That's all, stop editing! Happy blogging. */

/** Absolute path to the WordPress directory. */
if ( !defined('ABSPATH') )
        define('ABSPATH', dirname(__FILE__) . '/');

/** Sets up WordPress vars and included files. */
require_once(ABSPATH . 'wp-settings.php');

/*
define('WP_HOME','IPV6');
define('WP_SITEURL','IPV6');
*/

It’s possible that deleting your (five-character) line 84 will solve the problem. However, when comments are involved, the error causing the problem is oftentimes on an earlier line than what was flagged by the PHP parser.

Not that familiar with web-coding, but in any other code scenarios comments should not be interpreted. So I assume my error is in another part of the code
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