Electron 10.1.1 app crashes when saving a pdf from the print dialog

Preflight Checklist

• [ x ] I have read the Contributing Guidelines for this project.
• [ x ] I agree to follow the Code of Conduct that this project adheres to.
• [ x ] I have searched the issue tracker for an issue that matches the one I want to file, without success.

Issue Details

• Electron Version:
  • 10.1.1
• Operating System:
  • macOS 10.15.6
• Last Known Working Electron version:
  • unknown

Expected Behavior

I should be able to save a pdf file from the pdf menu without the app crashing

Actual Behavior

the pdf saves, but the app crashes

To Reproduce

Electron fiddle:
https://gist.github.com/c5de74c2973633e178803eef65b827df

Screenshots

Additional Information

It seems to be any of the options in this menu that crashes the app.
Removing the callback and running it like this:

mainWindow.webContents.print(printOptions)

seems to resolve it — but I need the callback