WP_Error( 'invalid_format', __( 'Invalid cookie format.' ) );
		}

		return $parts;
	}

	/**
	 * Generates the recovery mode cookie value.
	 *
	 * The cookie is a base64 encoded string with the following format:
	 *
	 * recovery_mode|iat|rand|signature
	 *
	 * Where "recovery_mode" is a constant string,
	 * iat is the time the cookie was generated at,
	 * rand is a randomly generated password that is also used as a session identifier
	 * and signature is an hmac of the preceding 3 parts.
	 *
	 * @since 5.2.0
	 *
	 * @return string Generated cookie content.
	 */
	private function generate_cookie() {
		$to_sign = sprintf( 'recovery_mode|%s|%s', time(), wp_generate_password( 20, false ) );
		$signed  = $this->recovery_mode_hash( $to_sign );

		return base64_encode( sprintf( '%s|%s', $to_sign, $signed ) );
	}

	/**
	 * Gets a form of `wp_hash()` specific to Recovery Mode.
	 *
	 * We cannot use `wp_hash()` because it is defined in `pluggable.php` which is not loaded until after plugins are loaded,
	 * which is too late to verify the recovery mode cookie.
	 *
	 * This tries to use the `AUTH` salts first, but if they aren't valid specific salts will be generated and stored.
	 *
	 * @since 5.2.0
	 *
	 * @param string $data Data to hash.
	 * @return string|false The hashed $data, or false on failure.
	 */
	private function recovery_mode_hash( $data ) {
		$default_keys = array_unique(
			array(
				'put your unique phrase here',
				/*
				 * translators: This string should only be translated if wp-config-sample.php is localized.
				 * You can check the localized release package or
				 * https://i18n.svn.wordpress.org/<locale code>/branches/<wp version>/dist/wp-config-sample.php
				 */
				__( 'put your unique phrase here' ),
			)
		);

		if ( ! defined( 'AUTH_KEY' ) || in_array( AUTH_KEY, $default_keys, true ) ) {
			$auth_key = get_site_option( 'recovery_mode_auth_key' );

			if ( ! $auth_key ) {
				if ( ! function_exists( 'wp_generate_password' ) ) {
					require_once ABSPATH . WPINC . '/pluggable.php';
				}

				$auth_key = wp_generate_password( 64, true, true );
				update_site_option( 'recovery_mode_auth_key', $auth_key );
			}
		} else {
			$auth_key = AUTH_KEY;
		}

		if ( ! defined( 'AUTH_SALT' ) || in_array( AUTH_SALT, $default_keys, true ) || AUTH_SALT === $auth_key ) {
			$auth_salt = get_site_option( 'recovery_mode_auth_salt' );

			if ( ! $auth_salt ) {
				if ( ! function_exists( 'wp_generate_password' ) ) {
					require_once ABSPATH . WPINC . '/pluggable.php';
				}

				$auth_salt = wp_generate_password( 64, true, true );
				update_site_option( 'recovery_mode_auth_salt', $auth_salt );
			}
		} else {
			$auth_salt = AUTH_SALT;
		}

		$secret = $auth_key . $auth_salt;

		return hash_hmac( 'sha1', $data, $secret );
	}
}
rrors ) ) {
			return true;
		}
		return false;
	}

	/**
	 * Adds an error or appends an additional message to an existing error.
	 *
	 * @since 2.1.0
	 *
	 * @param string|int $code    Error code.
	 * @param string     $message Error message.
	 * @param mixed      $data    Optional. Error data. Default empty string.
	 */
	public function add( $code, $message, $data = '' ) {
		$this->errors[ $code ][] = $message;

		if ( ! empty( $data ) ) {
			$this->add_data( $data, $code );
		}

		/**
		 * Fires when an error is added to a WP_Error object.
		 *
		 * @since 5.6.0
		 *
		 * @param string|int $code     Error code.
		 * @param string     $message  Error message.
		 * @param mixed      $data     Error data. Might be empty.
		 * @param WP_Error   $wp_error The WP_Error object.
		 */
		do_action( 'wp_error_added', $code, $message, $data, $this );
	}

	/**
	 * Adds data to an error with the given code.
	 *
	 * @since 2.1.0
	 * @since 5.6.0 Errors can now contain more than one item of error data. {@see WP_Error::$additional_data}.
	 *
	 * @param mixed      $data Error data.
	 * @param string|int $code Error code.
	 */
	public function add_data( $data, $code = '' ) {
		if ( empty( $code ) ) {
			$code = $this->get_error_code();
		}

		if ( isset( $this->error_data[ $code ] ) ) {
			$this->additional_data[ $code ][] = $this->error_data[ $code ];
		}

		$this->error_data[ $code ] = $data;
	}

	/**
	 * Retrieves all error data for an error code in the order in which the data was added.
	 *
	 * @since 5.6.0
	 *
	 * @param string|int $code Error code.
	 * @return mixed[] Array of error data, if it exists.
	 */
	public function get_all_error_data( $code = '' ) {
		if ( empty( $code ) ) {
			$code = $this->get_error_code();
		}

		$data = array();

		if ( isset( $this->additional_data[ $code ] ) ) {
			$data = $this->additional_data[ $code ];
		}

		if ( isset( $this->error_data[ $code ] ) ) {
			$data[] = $this->error_data[ $code ];
		}

		return $data;
	}

	/**
	 * Removes the specified error.
	 *
	 * This function removes all error messages associated with the specified
	 * error code, along with any error data for that code.
	 *
	 * @since 4.1.0
	 *
	 * @param string|int $code Error code.
	 */
	public function remove( $code ) {
		unset( $this->errors[ $code ] );
		unset( $this->error_data[ $code ] );
		unset( $this->additional_data[ $code ] );
	}

	/**
	 * Merges the errors in the given error object into this one.
	 *
	 * @since 5.6.0
	 *
	 * @param WP_Error $error Error object to merge.
	 */
	public function merge_from( WP_Error $error ) {
		static::copy_errors( $error, $this );
	}

	/**
	 * Exports the errors in this object into the given one.
	 *
	 * @since 5.6.0
	 *
	 * @param WP_Error $error Error object to export into.
	 */
	public function export_to( WP_Error $error ) {
		static::copy_errors( $this, $error );
	}

	/**
	 * Copies errors from one WP_Error instance to another.
	 *
	 * @since 5.6.0
	 *
	 * @param WP_Error $from The WP_Error to copy from.
	 * @param WP_Error $to   The WP_Error to copy to.
	 */
	protected static function copy_errors( WP_Error $from, WP_Error $to ) {
		foreach ( $from->get_error_codes() as $code ) {
			foreach ( $from->get_error_messages( $code ) as $error_message ) {
				$to->add( $code, $error_message );
			}

			foreach ( $from->get_all_error_data( $code ) as $data ) {
				$to->add_data( $data, $code );
			}
		}
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;WP_Recovery_Mode_Cookie_Service&quot; not found in /home/alibiuro/domains/alibiuro.pl/public_html/wp-includes/class-wp-recovery-mode.php:81
Stack trace:
#0 /home/alibiuro/domains/alibiuro.pl/public_html/wp-includes/error-protection.php(153): WP_Recovery_Mode-&gt;__construct()
#1 /home/alibiuro/domains/alibiuro.pl/public_html/wp-settings.php(538): wp_recovery_mode()
#2 /home/alibiuro/domains/alibiuro.pl/public_html/wp-config.php(113): require_once('...')
#3 /home/alibiuro/domains/alibiuro.pl/public_html/wp-load.php(50): require_once('...')
#4 /home/alibiuro/domains/alibiuro.pl/public_html/wp-blog-header.php(13): require_once('...')
#5 /home/alibiuro/domains/alibiuro.pl/public_html/index.php(17): require('...')
#6 {main}
  thrown in <b>/home/alibiuro/domains/alibiuro.pl/public_html/wp-includes/class-wp-recovery-mode.php</b> on line <b>81</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;WP_Recovery_Mode_Cookie_Service&quot; not found in /home/alibiuro/domains/alibiuro.pl/public_html/wp-includes/class-wp-recovery-mode.php:81
Stack trace:
#0 /home/alibiuro/domains/alibiuro.pl/public_html/wp-includes/error-protection.php(153): WP_Recovery_Mode-&gt;__construct()
#1 /home/alibiuro/domains/alibiuro.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/alibiuro/domains/alibiuro.pl/public_html/wp-includes/class-wp-recovery-mode.php</b> on line <b>81</b><br />