Electron 14 failing to open save dialog

test.js

const { app, BrowserWindow, dialog} = require('electron');

app.on('ready', async () => {

  const mainWindow = new BrowserWindow({
    center: true,
    autoHideMenuBar: true,
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false,
      webSecurity: true,
    },
  });

  await mainWindow.loadURL('about://blank')

  dialog.showSaveDialogSync(mainWindow, {
    title: 'Output location',
    buttonLabel: 'Save & Start',
    filters: [{ name: 'Video', extensions: ['mp4'] }],
    properties: ['createDirectory', 'showOverwriteConfirmation'],
  });

})