pnp – Read Modified By column with pnpjs

I want to select the fields I call and get the Modified By field – what’s the correct way to do this?

   .getByTitle(myList)'myId', 'Modified', 'Modified By'))
   .then(items=> {
    }) .catch(e=> console.log(e) )

It works fine if I take out the Modified By – I also tried Editor and had the same error.