Update check function cannot run successfully in packed mode

[argyili]

I guess the update check function can not run, for not calling setFeedURL function.
How do I do to make the check, download, and install functions come true?

{
    label: 'Check for Update',
    visible: true,
    key: 'checkForUpdate',
    click: () => {
      require('electron').autoUpdater.checkForUpdates()
 }

    /**
     * Asks the server whether there is an update. You must call `setFeedURL` before
     * using this API.
     */
    checkForUpdates(): void;

• What operating system are you using?
  MacOS
• What version of Node.js is on your system?
  7.20.3

[argyili]

Solved it myself. The URL can be set at the package.json.