get_keys() {
		return (array) get_option( $this->option_name, array() );
	}

	/**
	 * Updates the recovery key records.
	 *
	 * @since 5.2.0
	 * @since 6.8.0 Each key should now be hashed using wp_fast_hash() instead of phpass.
	 *
	 * @param array $keys {
	 *     Associative array of token => data pairs, where the data is an associative
	 *     array of information about the key.
	 *
	 *     @type array ...$0 {
	 *         Information about the key.
	 *
	 *         @type string $hashed_key The hashed value of the key.
	 *         @type int    $created_at The timestamp when the key was created.
	 *     }
	 * }
	 * @return bool True on success, false on failure.
	 */
	private function update_keys( array $keys ) {
		return update_option( $this->option_name, $keys, false );
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'WP_Recovery_Mode_Key_Service' not found in /home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/class-wp-recovery-mode.php:82
Stack trace:
#0 /home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/error-protection.php(153): WP_Recovery_Mode-&gt;__construct()
#1 /home/kordian1/domains/ostrabrama.pl/public_html/wp-settings.php(523): wp_recovery_mode()
#2 /home/kordian1/domains/ostrabrama.pl/public_html/wp-config.php(81): require_once('/home/kordian1/...')
#3 /home/kordian1/domains/ostrabrama.pl/public_html/wp-load.php(50): require_once('/home/kordian1/...')
#4 /home/kordian1/domains/ostrabrama.pl/public_html/wp-blog-header.php(13): require_once('/home/kordian1/...')
#5 /home/kordian1/domains/ostrabrama.pl/public_html/index.php(17): require('/home/kordian1/...')
#6 {main}
  thrown in <b>/home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/class-wp-recovery-mode.php</b> on line <b>82</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'WP_Recovery_Mode_Key_Service' not found in /home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/class-wp-recovery-mode.php:82
Stack trace:
#0 /home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/error-protection.php(153): WP_Recovery_Mode-&gt;__construct()
#1 /home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/class-wp-fatal-error-handler.php(54): wp_recovery_mode()
#2 [internal function]: WP_Fatal_Error_Handler-&gt;handle()
#3 {main}
  thrown in <b>/home/kordian1/domains/ostrabrama.pl/public_html/wp-includes/class-wp-recovery-mode.php</b> on line <b>82</b><br />