Electron update-available and update-downloaded event not fire on client - electron

Question

when client call autoUpdater.checkForUpdates() i can see the server log display this:
debug: Windows Update Search Query {
platform: ['windows_32'],
version: '2.0.0',
channel: 'stable'
}
debug: Applicable Channels['stable'] debug: Time Filter {
'>=': 2017 - 09 - 20 T08: 43: 10.000 Z
}
debug: Latest Windows Version {
assets: [{
name: 'DesktopAlert-3.0.0-ia32-full.nupkg',
platform: 'windows_32',
filetype: '.nupkg',
hash: '3536C0AD153B97027FEDE24CE1E9FE6C9863E04B',
size: 52623567,
download_count: 0,
fd: 'C:\Projects\electron-release-server\data\34506780-7e2c-487e-9bb6-67b47674e76b.nupkg',
createdAt: '2017-09-20T09:11:09.000Z',
updatedAt: '2017-09-20T09:11:09.000Z',
version: '3.0.0'
}],
channel: 'stable',
name: '3.0.0',
notes: '',
createdAt: '2017-09-20T08:43:31.000Z',
updatedAt: '2017-09-20T08:43:31.000Z'
}
but on the client, there is no event fired.
here is the client code for the auto update
autoUpdater.on('update-not-available', (event, releaseNotes, releaseName) => {
console.log(event)
mainWindow.webContents.send('update-not-available', {
msg: event
})
})
autoUpdater.on('update-available', (event, releaseNotes, releaseName) => {
console.log(event)
mainWindow.webContents.send('update', {
msg: event
})
})
autoUpdater.on('update-downloaded', (event, releaseNotes, releaseName) => {
console.log(event)
mainWindow.webContents.send('downloaded', {
msg: event
})
const dialogOpts = {
type: 'info',
buttons: ['Restart', 'Later'],
title: 'Application Update',
message: process.platform === 'win32' ? releaseNotes : releaseName,
detail: 'A new version has been downloaded. Restart the application to apply the updates.'
}
dialog.showMessageBox(dialogOpts, (response) => {
if (response === 0) autoUpdater.quitAndInstall()
})
})
autoUpdater.on('checking-for-update', (event, releaseNotes, releaseName) => {
console.log(event)
mainWindow.webContents.send('checking', {
msg: event
})
})
autoUpdater.on('error', message => {
console.error('There was a problem updating the application')
console.error(message)
})
please help, did I forget anything?
P/s: sorry for the code format, don't know how to put code quote