info array from _get_cron_array().
 * @return array An upgraded cron info array.
 */
function _upgrade_cron_array( $cron ) {
	if ( isset( $cron['version'] ) && 2 === $cron['version'] ) {
		return $cron;
	}

	$new_cron = array();

	foreach ( (array) $cron as $timestamp => $hooks ) {
		foreach ( (array) $hooks as $hook => $args ) {
			$key = md5( serialize( $args['args'] ) );

			$new_cron[ $timestamp ][ $hook ][ $key ] = $args;
		}
	}

	$new_cron['version'] = 2;

	update_option( 'cron', $new_cron );

	return $new_cron;
}
<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function wp_next_scheduled() in /home/sportuga/public_html/wp-includes/class-wp-recovery-mode.php:99
Stack trace:
#0 /home/sportuga/public_html/wp-settings.php(509): WP_Recovery_Mode-&gt;initialize()
#1 /home/sportuga/public_html/wp-config.php(102): require_once('/home/sportuga/...')
#2 /home/sportuga/public_html/wp-load.php(50): require_once('/home/sportuga/...')
#3 /home/sportuga/public_html/wp-blog-header.php(13): require_once('/home/sportuga/...')
#4 /home/sportuga/public_html/index.php(17): require('/home/sportuga/...')
#5 {main}
  thrown in <b>/home/sportuga/public_html/wp-includes/class-wp-recovery-mode.php</b> on line <b>99</b><br />